HELICOPTER, ATTACK, AH-64D LONGBOW APACHE. TECHNICAL MANUAL (2002)

TM 1-1520-251-10

3.53BI.4 AIR REQUEST Pages.

mission list is accomplished by pressing the paging (up-

per right) button on the MPD. Accessing a stored Air Mis-

sion Request Summary page is accomplished by pressing

a. Description. The Air Request (AIR REQ) list can

the left button adjacent to desired mission. Complete mis-

store up to eight fire mission requests. The three index

sion information will be displayed. Initiating a new mission

pages display observer mission number, type of ord-

request is accomplished by pressing a NEW key - button

nance, firing element (LAUNCHER/subscriber) to which

of an available mission number on the Air Request list, se-

the request was sent, and mission status. This list is for

lecting air mission type, entering the required parameters,

originating mission requests. Incoming new missions are

receiving the summary, and transmitting the data

stored in the Received Message file. Stepping through the

(fig 3-62BW and 3-62BX).

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 3

3-66.69

TM 1-1520-251-10

(2) Storing/Sending Air Mission Fire Request

(3) Digital Remote HELLFIRE Laulcher (L) and

For Ordanance Other Than Remote HELLFIRE.

Designator (D) Mission Execution.

1. Locate target - CAQ or KU enter as required.

•

Remote HELLFIRE (REMOTE HLFR)

NOTE

mission request. The paging required for

a simplified request (fig 3-62BX).

The last CAQ’d (T50 or etc.) will automati-

• Launcher AUTO SHOT should be set to

cally fill the target location data field. Subse-

ON to enable automatic TOF messaging

quent target CAQing targets will overwrite

from the launcher to designator at trigger

the target data.

pull.

• The launcher’s HFMSN should be boxed

COM page - Press as required.

to enable automatic CPG weapons mod-

ing. Selecting the button will box and un-

MSG SEND page - Select.

box HFMSN.

ATHS page - Select.

NOTE

INDEX button - Press as required to display

When HFMSN is boxed T51 it will be auto-

ATHS - TACFIRE index page.

matically populated with the coordinate data

from the Hellfire message. T51 target data

AIR REQ line - key button - Press.

will be overwritten with the last CAQ’d target

Line (1 - 8) - Select mission number on which

when the operator toggles the HFSM but-

mission is to be entered. NEW button - Press.

ton.

• Set FAT on STATUS page to insure valid

MSN TYPE - Press appropriate button.

TOF message. FAT is not integrated with

As pages sequence, press appropriate button.

the 1553B bus.

• The Mission Status will change from RE-

10.

Air Mission Summary page - Review and

QUESTED to ACCEPTED, READY,

change parameters as required.

FIRE, and SHOT. At completion of mis-

To execute a fire request, perform steps 9 and

sion an END OF MISSION message

10.

should be sent.

(D) ATHS - Select.

11.

On Air Mission Summary page, SEND button -

Press.

(D) INDEX - Select as required.

12.

ATHS button - Press and repeat steps 1

(D) AIR REQ - Select.

through 8 above for each net as required.

(D) NEW (as desired) - Select next available air

To recall and send a stored mission, perform

mission.

steps 11 through 14.

NOTE

13.

INDEX button - Press as required to display

There are three pages (3/3) of NEW AIR

ATHS - TACFIRE index page.

MSN’s available, select the next available

AIR MSN.

14.

AIR REQ line - key button - Press.

(D) HELLFIRE - Select.

15.

Desired mission (1 - 8) line number - Select.

(D) Locate target - CAQ or KU enter as re-

16.

R1 button - Press to display Air Mission Sum-

quired.

mary page.

NOTE

17.

*>DEST button - Enter SUB, TEAM or BC ad-

The last target CAQ’d (T50 or ect.) will auto-

dress as desired through KU.

matically fill the target location data fill. Sub-

18.

On Air Mission Summary page, SEND button -

sequent target CAQing will overwrite the tar-

Press.

get data.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-66.72

Change 3

TM 1-1520-251-10

7. D) TARGET type - Select and set.

• The launcher must verify that the target is

within range based upon the environ-

(D) ACTIVITY - Select and set

mental conditions. The range is set to

flash at ranges greater than 4 KM. The

(D) 1/3 - Select and advance to page 2/3.

bearing to the target is relative to the

launcher in this case and the > indicates

10.

(D) MST (missile separation time) TRAJ, Code/

the closest direction to turn to the target.

quantity - Set/verify.

•

Range and bearing are displayed appro-

priately for the aircraft location (launcher

NOTE

and designator).

The LDA/SEP L2 on 2/3 should be ignored.

Data will not accurately display on page 2/3

17.

(L) CMD line - Verify ACCPT is displayed.

until both the DEST subscriber 3/3 has been

entered and valid subscriber data is avai-

18.

(L) SEND - Select and note send/receive advi-

lable. Valid subscriber data is automatically

sory status R1.

provided if a previous situation report was

received or an ATHS-TACFIRE position

query was performed. Page 3/3 also dis-

19.

(L) - CMD line - Verify that READY is now dis-

plays the LDA/SEP data bloc.

played.

11.

(D) Select 2/3 - Advance to page 3/3 and verify

20.

(L) SEND - Select and not send/receive adviso-

Range/Bearing to TGT.

ry status R1.

12.

(D) >DEST - ?? - Select and enter subscriber

ID.

21.

(D) - CMD line - Verify that FIRE is now dis-

played.

13.

(D) SEND - Select and note send/receive advi-

sory status R1.

22.

(L) SEND - Select and note send/receive advi-

sory status R1.

14.

(L) ATHS MSG - Receive. Select INDEX page

and RCVD MSG buttons.

23.

(L) Missile in constraints, FIRE missile, and

15.

(L) Message buffer address L2, L3, or L4 - Se-

auto - send or manual send SHOT CMD.

lect to open AIR REQ Message.

24.

(D) - Monitor TOF, LASE target at delay time.

16.

(L) LDA/SEP, B/R, Mode, Code, & Qty - Verify

data.

25.

(L) - FIRE second missile at MST, if required.

NOTE

• The Launcher must verify the LDA and

26.

(D) - Monitor TOF, LASE target for second mis-

SEP angle. The LDA is the laser designa-

sile.

tion angle and is the area in front of the

launching aircraft that the designating air-

27.

(D) - CMD line - Set to EOM.

craft should avoid. This angle is +/- 30 de-

grees of the launchers gun-target line (soft-

28.

(D) - SEND - Select and note send/receive ad-

ware is set to flash at +/- 20 degrees).

visory status R1.

• The Separation angle (SEP) is +/- 60 de-

grees from the target back towards the des-

ignator aircraft. This is the angle that the

NOTE

designator should be inside to preclude a

missile miss due to laser angle to the mis-

The receipt of the EOM will automatically

sile. The SEP angle will flash when the

mode the CPG’s weapon systems back to

angle is greater than 60 degrees.

their previous settings.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 3

3-66.73

TM 1-1520-251-10

3.53BI.5 Artillery Request Pages.

(5) Copperhead (CPHD).Target position is de-

fined as NEW or Known Point and point number is pro-

a. Description. The mission data contained in the DIM

vided to the firing element.

is formatted to be consistent with the TACFIRE Artillery Fire

Direction Center (FDC) system and associated forward ob-

c. Artillery Fire Requests.

server digital message devices (DMD). Artillery mission com-

There are three types of artillery fire requests - pre-

mand selection is initially entered on the ARTY MISSION

planned, new, and Copperhead.

SUMMARY page automatically as REQ. Upon receipt of the

TACFIRE FDC message-to-observer (MTO), the mission

d. Preplanned Fire Requests.

command will automatically change to FIRE. A READY com-

mand will be displayed if the Battery Computer System

To insert a preplanned fire request, proceed as follows:

(BCS) is online with TACFIRE. Target position (range and

1. COM page - Press as required.

bearing from the helicopter) is automatically calculated. By

pressing the TGT PSN (target position) button, the operator

2. MSG REC or MSG SEND page - Select.

can manually enter the UTM grid, range, bearing, and altitude

of the target on subpages if required. The Artillery Request

3. ATHS page - Select.

List stores two active artillery missions and two preplanned

mission requests on the Preplanned Mission List subpage.

4. INDEX button - Press, as required, to display

Accessing either active mission is accomplished by pressing

ATHS - TACFIRE INDEX page.

the M1 or M2 button on the ARTY REQ list page. To review

a preplanned mission, pressing the PPLN LIST button on the

5. ARTY REQ line - key button - Press.

Preplanned Mission List page will cause the Preplanned Mis-

6. NEW line - key button - Press (On line opposite

sion Summary page to display.

mission to be replaced).

NOTE

7. REQ PPLN button - Press.

In order to store a preplanned mission, a pre-

8. Mission type - Select either FPF or CPHD as

plan request must be executed and stored as

desired.

a standard artillery preplan request. Then the

mission must be inserted into preplan list.

NOTE

If KNPT TGT is selected, entry of two - digit

Initiating a new artillery mission request is accomplished

KNPT number is required.

by pressing the NEW line - key button of an available mis-

sion number, selecting artillery mission type, following

9. KNPT TGT or NEW TGT - Select as appropri-

prompts through the subpages, reviewing summary page,

ate.

and transmitting data.

10. ARTY mission summary page will appear -

b. Types of artillery mission requests are as follows:

Press SEND. Wait for preplanned MTO then

continue.

(1) NEW TGT. Observer defines target type and

strength.

11. INDEX button - Press to return to ATHS - TAC-

FIRE index page.

(2) Known Point (KNPT TGT). The observer de-

fines a point which is a location previously identified and num-

12. ARTY REQ line - key button - Press.

bered, known both to the requestor and to the artillery FDC.

13. PPLN LIST button - Press.

The requestor then provides target type and strength.

14. P1 or P2 - Press NEW as desired.

(3) QUICK. Requestor enters only a known

point. All other data is known by the artillery FDC.

15. L2 - Press on preplan insertion pages.

(4) Preplanned (REQ PPLN). Observer pro-

16. Repeat steps 1. through 11. to insert a second

vides type of fire request (either Final Protective Fire

preplanned mission.

(FPF) or Copperhead (CPHD) guided munitions). Only

NOTE

one FPF can be preplanned at a time; however, both pre-

planned missions can be Copperhead. The requestor

If the PPLN mission is requested as M1, it

then provides target position and known point number.

can only be stored as P1.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-66.74

Change 3

TM 1-1520-251-10

e. New Artillery Fire Mission Request.

7. To accomplish in active mission, M1 or M2 but-

ton - Press as desired.

To initiate a new fire mission, proceed as follows:

8. CPHD - Press.

1. Locate target - CAQ or KU enter as required.

NOTE

If KNPT TGT is selected, entry of two - digit

KNPT number is required.

The last target CAQ’d (T50 or ect.) will auto-

matically fill the target location data fill. Sub-

9. NEW TGT or KNPT TGT - Select as appropri-

sequent target CAQing will overwrite the tar-

ate.

get data.

10. ARTY mission summary page will appear - Re-

2. COM page - Press as required.

view ARTY mission summary page and change

as required.

3. MSG REC or MSG SEND page - Select.

11.

*>DEST button - Enter SUB, TEAM or BC ad-

4. ATHS page - Select.

dress as desired through KU.

5. INDEX button - Press, as required, to display

12. SEND button - Press.

ATHS - TACFIRE INDEX page.

3.53BI.6

MOVEMENT Command Communica-

6. ARTY REQ line - key button - Press.

tions. The MOVEMENT pages allow position instruc-

tions to be transmitted without voice communication. The

7. NEW button opposite mission (M1 or M2) to be

DIM operator can issue directions to specific or all team

replaced - Press.

members to MOVE TO, HOLD AT, rendezvous (RDZV) at;

8. Mission type - Press applicable button and en-

or inform team members MOVlNG TO or HLDG AT a loca-

ter required parameters on subsequent pages

tion. The locations can be preset to allow QUICK commu-

until all data is inserted.

nication. In addition, the MOVEMENT pages allow auto-

matic transmission of current position through MY

9. Review mission on summary page and make

POSITION button and free text communication through

changes as required.

the OTHER button.

10.

*>DEST button - Enter SUB, TEAM or BC ad-

a. MOVEMENT Command Transmission.

dress as desired through KU.

Transmit movement commands as follows:

11. SEND button - Press.

1. COM page - Press as required.

f. Copperhead Fire Mission - Active and Pre-

2. MSG REC or MSG SEND page - Select.

planned.

3. ATHS page - Select.

To accomplish a Copperhead fire mission, proceed as fol-

lows:

4. INDEX button - Press, as required, to display

ATHS - TACFIRE INDEX page.

1. Locate target - CAQ or KU enter as required.

5. MOVEMENT line - key button - Press.

NOTE

6. Appropriate movement type button - Press.

The last target CAQ’d (T50 or ect.) will auto-

7. Appropriate destination select button - Press.

matically fill the target location data fill. Sub-

sequent target CAQing will overwrite the tar-

NOTE

get data.

Pressing the OTHER button will display

2. COM page - Press as required.

freetext message entry page where a manu-

al entry can be made using KU.

3. MSG REC or MSG SEND page - Select.

8. Mission summary page - Review and change as

4. ATHS page - Select.

required.

5. INDEX button - Press, as required, to display

*>DEST button - Enter SUB, TEAM or BC ad-

ATHS - TACFIRE INDEX page.

dress as desired through KU.

6. ARTY REQ line - key button - Press.

10. SEND button - Press.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 3

3-66.75

TM 1-1520-251-10

3.53BI.7 REPORT Communications. The REPORTS

NOTE

pages (fig. 3-60) allow the observer to provide various in-

The last target CAQ’d (T50 or ect.) will auto-

formation to team and net members such as: Situation/

matically fill the target location data fill. Only

status (SIT/STATUS) which reports the observers own sit-

one location data fill is available.

uation, SPOT which reports target activity, ATI or provide

intelligence reports to artillery units, BDA to report battle

2. COM page - Press as required.

damage assessments, CAS to report casualty assess-

ments, NEG SPOT, and REQUEST to request a report

3. MSG REC or MSG SEND page - Select.

from another subscriber.

4. ATHS page - Select.

a. Situation/Status (SIT/STATUS). Report Trans-

5. INDEX button - Press, as required, to display

mission. To transmit observers situation and/or status,

ATHS - TACFIRE INDEX page.

proceed as follows:

6. REPORTS line - key button - Press.

NOTE

7. SPOT button - Press.

The situation report will automatically in-

NOTE

clude the ownship’s fuel, AMMO (30mm),

rocket, and missile (FARM) quantities. No

Three different target types may be entered

operator input is required.

for each SPOT report.

8. TARGET type - Press appropriate button.

1. COM page - Select.

9. Target strength (STR) - Press appropriate but-

2. MSG REC or MSG SEND page - Select.

ton.

10. R1 button - Press.

3. ATHS page - Select.

11. ALT button - Press as desired.

4. INDEX button - Press, as required, to display

12. Target (TGT) ACTIVITY - Select as desired. If

ATHS - TACFIRE INDEX page.

MOVING is selected, proceed to step 10. If STA-

TIONARY is selected, proceed to step 11.

5. REPORTS line - key button - Press.

13. Target direction - Press appropriate button.

6. Activity to report - Press the desired activity but-

14. R1 button - Press.

ton: HOLDING, CONT MSN, OBS TGT, EN-

GAGING.

15. Mission summary page - Review and change as

required.

7. Report summary page - Review and change as

16.

*>DEST button - Enter SUB, TEAM or BC ad-

required.

dress as desired through KU.

*>DEST button - Enter SUB, TEAM or BC ad-

17. SEND button - Press.

dress as desired through KU.

c. Battle Damage Assesment (BDA) REPORT

Transmission.

9. SEND button - Press.

To provide battle damage assessments, proceed as follows:

1. COM page - Press as required.

SPOT REPORT Transmission.

2. MSG REC or MSG SEND page - Select.

To transmit a spot report, proceed as follows (fig.

3. ATHS page - Select.

3-62BW):

4. INDEX button - Press, as required, to display

ATHS - TACFIRE INDEX page.

1. Locate target - CAQ, store or receive as re-

quired.

5. REPORTS line - key button - Press.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-66.76

Change 3

TM 1-1520-251-10

6. BDA/CAS button - Press.

9. Target strength - Press appropriate button.

7. BDA summary page - Press appropriate button

10. R1 button - Press.

and manually enter information using KU.

NOTE

11. RAD/LGTH, WIDTH, and ATTITUDE buttons -

Press as appropriate.

The last target CAQ’d (T50 or etc.) will auto-

matically fill the target location data fill.

12. R1 button - Press.

*>DEST button - Enter SUB, TEAM or BC ad-

dress as desired through KU.

13. ATl summary page - Review and change as re-

9. SEND button - Press.

quired.

d. CASUALTY (CAS) REPORT TRANSMISSION.

NOTE

To provide casualty reports, proceed as follows:

The last target CAQ’d (T50 or etc.) will auto-

1. COM page - Press as required.

matically fill the target location data fill.

2. MSG REC or MSG SEND page - Select.

14.

*>DEST button - Enter SUB, TEAM or BC ad-

dress as desired through KU.

3. ATHS page - Select.

4. INDEX button - Press, as required, to display

15. SEND button - Press.

ATHS - TACFIRE INDEX page.

5. REPORT line - key button - Press.

f. REPORT Requesting From Another Subscriber.

6. BDA/CAS button - Press.

To request a report from another subscriber, proceed as

follows:

7. CAS summary page - Press appropriate button

and manually enter information using KU.

COM page - Press as required.

NOTE

MSG REC or MSG SEND page - Select.

The last target CAQ’d (T50 or etc.) will auto-

matically fill the target location data fill.

ATHS page - Select.

*>DEST button - Enter SUB, TEAM or BC ad-

dress as desired through KU.

INDEX button - Press, as required, to display

9. SEND button - Press.

ATHS - TACFIRE INDEX page.

e. Artillery Intellegence REPORT (ATI) Transmis-

REPORTS line - key button - Press.

sions.

To transmit an artillery intelligence (ATI) report, proceed

REQUEST button - Press.

as follows:

On report request select page - Press appropri-

1. COM page - Press as required.

ate button to designate type of report desired.

2. MSG REC or MSG SEND page - Select.

DEST - button on summary page - Press and

3. ATHS page - Select.

enter subscriber identifier from which report is

4. INDEX button - Press, as required, to display

desired using KU.

ATHS - TACFIRE INDEX page.

Request report summary page - Review and

5. REPORTS line - key button - Press.

change as required.

6. ATI button - Press.

10.

“>DEST button - Enter SUB, TEAM or BC ad-

7. REL - Scroll through reliability option until de-

dress as desired through KU.

sired option is displayed.

8. Target type - Press appropriate button.

11.

SEND button - Press to transmit request.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 3

3-66.77

TM 1-1520-251-10

3.53BI.8

STATUS Pages. The STATUS pages (fig

c. Weapons Status - All Subscribers.

3-60) provide a means of maintaining and reviewing the

last position, fuel, ammunition, rocket, and missile

To obtain subscriber weapons status, proceed as follows:

(FARM) status of subscribers. STATUS pages are auto-

matically filled each time a subscribers situation report is

1. COM page - Press as required.

received. The status pages also maintain the ownship’s

2. MSG REC or MSG SEND page - Select.

dynamic status. The weapons format will depend on

whether the subscriber is defined in an AIR NET or a TAC-

3. ATHS page - Select.

FIRE NET. The subscriber pages will be automatically up-

dated upon receipt of a situation/status report. There is no

4. INDEX button - Press, as required, to display

need to input or edit ownship data.

ATHS - TACFIRE INDEX page.

a. OWN STATUS.

5. STATUS button - Press.

To review own status, proceed as follows:

6. SUBS WPNS button - Press. Review weapons

status of net subscribers as DIM automatically

1. COM page - Press as required.

sequences from the first subscriber in NET 1 to

the last subscriber in NET 8.

2. MSG REC or MSG SEND page - Select.

7. Paging button - Press to return to status index

3. ATHS page - Select.

page.

4. INDEX button - Press, as required, to display

d. Present Position Status - All Subscribers.

ATHS - TACFIRE INDEX page.

To obtain present position information on all net subscrib-

ers, proceed as follows:

5. STATUS line - key button - Press.

COM page - Press as required.

6. OWN WPNS or OWN PPSN button - Press as

desired.

MSG REC or MSG SEND page - Select.

7. For OWN WPNS entry, laser designator code -

ATHS page - Select.

Enter using KU and press paging select button

(1/1) to return to status index page.

INDEX button - Press, as required, to display

ATHS - TACFIRE INDEX page.

OWN PPSN Entry.

STATUS line - key button - Press.

NOTE

6. SUBS PPSN button - Press.

Present position, ALT, and FUEL is conti-

nously updated and maybe manually edited.

NOTE

• Subscriber status will begin with the first

To Manually change proceed as follows:

subscriber in NET 1 and display, in order,

through the last subscriber in NET 8 as

1. KU and UTM button - Press and enter coordi-

paging button is pressed.

nates.

• UTM button can be alternately pressed to

display UTM grid coordinates or range

2. ALT button - Press and enter altitude.

and bearing of subscriber status being

displayed.

3. FUEL button - Press and enter quantity.

If desired, return to status index page by press-

4. Paging select (1/1) - Press to return to status in-

ing paging button once more after last subscrib-

dex page (fig 3-60).

er status is displayed.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-66.78

Change 3

TM 1-1520-251-10

e. Weapons/Present Position STATUS - Single

3.53BI.9 FREE TEXT/PRESET Pages. The FREE TEXT/

Subscriber.

PRESET message pages (fig 3-62BV) allow the observer to

compose and transmit any message up to 36 characters (two

1. COM page - Press as required.

lines) at any time. Also, these pages allow messages to be

composed and stored for subsequent recall and transmission

2. MSG REC or MSG SEND page - Select.

at the appropriate time. The top message page includes a

MAYDAY for QUICK MAYDAY broadcasts, a CHECKFIRE

3. ATHS page - Select.

message for a QUICK cease fire broadcast, an authentica-

tion synchronization message to align the FDC codes to the

4. INDEX button - Press, as required, to display

DIM codes, and cancel checkfire message. The free text and

ATHS - TACFIRE INDEX page.

preset messages contain the same information. The free text/

preset messages are automatically addressed to the team

5. STATUS line - key button - Press.

subscriber identifier. the MAYDAY message is addressed to

the broadcast subscriber identifier, and contains the MAYDAY

6. SELECT button - Press.

message and own present position. The Authentication Syn-

chronization (AUTH) message is addressed to the broadcast

7. SUB - button - Press. Enter desired subscriber

subscriber identified in the start pages with whom the auto-

identifier using KU. Present position page will

matic authentication is to occur (normally TACFIRE). If, after

display.

transmission, a NAK is returned, the tables are out of syn-

chronization. TACFIRE will still get the message and change

8. Paging button - Press to review weapons sta-

tables to match the observers. TACFIRE will call back once

tus.

synchronization has been accomplished.

9. Weapons status paging button - Press to return

a. FREE TEXT Message Composotion and Trans-

to status index page.

mission.

Subscriber Position STATUS.

To compose and transmit a free text message, proceed as

follows:

COM page - Press as required

1. COM page - Press as required.

MSG REC or MSG SEND page - Select

2. MSG REC or MSG SEND page - Select.

ATHS page - Select

3. ATHS page - Select.

INDEX button - Press, as required, to display

ATHS - TACFIRE INDEX page.

4. INDEX button - Press, as required, to display

ATHS - TACFIRE INDEX page.

STATUS line - key button - Press.

5. MSGS/FTXT line - key button - Press.

POS UPDT button - Press.

6. DEST button - Enter subscriber identifier using

SUBS POSITION button - Press and review.

KU.

Repeat steps 1 through 3.

NOTE

SUBS NET button - Select appropriate NET.

When FREE TEXT - TEST is used for com-

munication check, data is not required.

10.

Repeat steps 4 and 5 as desired.

7. FREE TEXT button - Press to scroll between

11.

SUMMARY page - Review and select destina-

TEST and DATA as required.

tion.

12.

*>DEST button - Enter SUB, TEAM or BC ad-

8. Message - Enter any message up to 36 charac-

dress as desired through KU.

ters long using KU.

13.

SEND button - Press.

9. SEND button - Press to transmit message.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 3

3-66.79

TM 1-1520-251-10

b. PRESET Message Transmission.

d. MAYDAY Message Transmission.

To broadcast a MAYDAY message, proceed as follows:

To transmit any of up to six preset messages entered dur-

ing DIM initialization, proceed as follows:

1. COM page - Press as required.

2. MSG REC or MSG SEND page - Select.

1. COM page - Press as required.

3. ATHS page - Select.

2. MSG REC or MSG SEND page - Select.

4. INDEX button - Press, as required, to display

3. ATHS page - Select.

ATHS - TACFIRE INDEX page.

4. INDEX button - Press, as required, to display

5. MSGS/FTXT line - key button - Press.

ATHS - TACFIRE INDEX page.

6. MAYDAY button - Press.

5. MSGS/FTXT line - key button - Press.

7. Present position is automatically filled. To

change present position in UTM grid, POSITION

6. MSG PRESETS button - Press.

button - Press. Enter UTM using KU.

7. Select message to be transmitted by pressing

8. Broadcast identifier is automatically inserted to

button adjacent to appropriate message num-

change: DEST - button - Press and enter identi-

ber.

fier.

9. SEND button - Press.

8. DEST - button - Press and enter subscriber

identifier.

10. To return to ATHS - TACFIRE index page, IN-

DEX button - Press.

9. SEND button - Press.

e. A U T H E N T I C A T I O N Synchronization

10. To return to ATHS - TACFIRE index page, IN-

Transmission.

DEX button - Press.

To broadcast an Authentication Synchronization transmis-

sion, proceed as follows:

c. CHECKFIRE Message Transmission.

1. COM page - Press as required.

To broadcast a cease fire message to all subscribers, pro-

2. MSG REC or MSG SEND page - Select.

ceed as follows:

3. ATHS page - Select.

1. COM page - Press as required.

4. INDEX button - Press, as required, to display

2. MSG REC or MSG SEND page - Select.

ATHS - TACFIRE INDEX page.

5. MSGS/FTXT line - key button - Press.

3. ATHS page - Select.

6. AUTH button - Press.

4. INDEX button - Press, as required, to display

ATHS - TACFIRE INDEX page.

7. DEST - button - Press. Enter identifier of sub-

scriber with which automatic authentication is

5. MSGS/FTXT line - key button - Press.

desired.

8. When desired, SEND button - Press.

6. CHECKFIRE button - Press.

NOTE

7. Broadcast identifier is automatically inserted to

• If authentication tables between sender

change: DEST - button - Press and enter identi-

and receiver are not synchronized, a

fier. using KU.

NAK will be returned. Sender should not

retransmit.

8. SEND button - Press.

• Receiver should change table positions

9. To return to ATHS - TACFIRE index page, IN-

and transmit to original sender with tables

DEX button- Press.

synchronized.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-66.80

Change 3

TM 1-1520-251-10

f. Cancel Checkfire Message Transmission.

subscriber list, will be stored and an advisory displayed; how-

ever, an ACK will not be transmitted back. A message re-

To broadcast a cancel checkfire message, proceed as fol-

ceived addressed to the Team or Broadcast identifiers will be

lows:

stored and an advisory displayed but an ACK will not be sent

to the originator. The RCVD MSG index will show the mes-

1. COM page - Press as required.

sage number, the identifier of the sender, a three character

identifier of message type, a six character field indicating the

2. MSG REC or MSG SEND page - Select.

message content, and the status of the message. If the mes-

sage has been reviewed, delete (DEL) will appear next to the

3. ATHS page - Select.

right hand button line; if not yet reviewed, NEW will appear.

4. INDEX button - Press, as required, to display

Another function of the received messages is that it allows

ATHS - TACFIRE INDEX page.

the observer to leave the ATHS-TACFIRE pages and still be

able to manage a fire mission. The fire mission summary

5. MSGS/FTXT line - key button - Press.

pages will be automatically updated upon the receipt of new

mission commands. Received FREE TEXT and movement

6. CANCKF button - Press.

messages can be deleted on the page that they are re-

7. DEST button - Press. Enter identifier of sub-

viewed. If delete is selected, the system will return to the re-

scriber as desired.

ceived message index page. Situation/status reports are au-

tomatically deleted after they have been reviewed and the

8. SEND button - Press.

information is stored in the status pages.

9. To return to ATHS - TACFIRE index page, IN-

a. Reviewing Received ATHS Messages.

DEX button - Press.

3.53BI.10 Received Messages.

There are three different ways to review a received mes-

sage. To review a received message, follow one of the

NOTE

procedures described:

ATHS - TACFIRE messages can only be

Procedure #1

opened and viewed from the ATHS MSG

RCVD page. The COM DIM MSG RCVD will

1. TSD page REC button (if the last message re-

only allow for the deletion of an ATHS - TAC-

ceived is a tactical message) - Press as re-

FIRE message.

quired. Upon selection of this button the page

The received message function of the DIM allows the observ-

will automatically switch to the RCVD MSG

er to access the received message list to review new mes-

page.

sages. It also allows the observer to review and delete any

2. Message to be reviewed - Select by pressing

previously received messages, to include received fire re-

button adjacent to appropriate message num-

quests. When an ATHS-TACFIRE DIM message is received,

ber.

it will be stored in the RCVD MSGS index of the DIM buffer

and an ATHS message advisory will appear on the MPD and

3. Delete message as appropriate.

EUFD. An audible MODEM communication squelch is readily

perceivable during the message transmission and reception.

Procedure #2

Twelve messages (12 per ATHS-TACFIRE radio) can be

stored for review and deletion when desired, except for situa-

1. COM page - Select.

tion/status reports which are automatically deleted upon re-

view. Messages received while the RCVD MSGS index is full

2. MSG REC page - Select.

will not be accepted, and the received advisory will not be dis-

3. Select TACFIRE message to be reviewed - Se-

played. When a message is received an acknowledge (ACK)

lect by pressing button adjacent to appropriate

is automatically transmitted back to the message originator

message number.

with no operator action required. Messages received which

are not recognizable, improperly addressed (net data incor-

4. RVW button - Press as required.

rect), or unprocessable will be ignored. The originator will not

have an ACK displayed and an ATHS-TACFIRE MESSAGE

5. Review message.

will not be displayed to the receiver. A message received

which is acceptable, but from an originator not defined in the

6. Delete message as appropriate.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 3

3-66.81

TM 1-1520-251-10

Procedure #3

6. Message to be reviewed - Select by pressing

button adjacent to appropriate message num-

1. COM page - Select.

ber.

2. MSG REC or MSG SEND page - Select.

7. Delete message as appropriate.

3. ATHS page - Select.

8. To return to ATHS - TACFIRE index page, IN-

DEX button - Press.

4. INDEX button - Press, as required, to display

ATHS - TACFIRE INDEX page.

b. ATHS MESSAGES. Table 3 - 3 lists all different

5. RCVD MSG line - key button - Press to display

ATHS messages that can be displayed on the MSG REC

received message index.

page.

Table 3 - 3F.

ATHS Messages

TYPE OF MESSAGE

MESSAGE DISPLAYED ON THE MSC REC PAGE

Free Text

FREE TEXT T

Airborne Battle Damage Assessment/Casualty Report

BDA REPORT T

Airborne Situation Report

FARM REPORT T

Position Update Request

PP QUERY T

Position Update Reply

PP REPORT T

Airborne Mayday

MAYDAY REPORT

Airborne Movement Command

MOVE COMMAND

AIrborne Spot Report

SPOT REPORT

Airborne Negative Spot Report

NEG SPOT REPORT

Airborne Fire Request

AIR FIRE REQUEST

Airborne Mission Command

AIR FIRE REQUEST

Airborne Check All

AIR FIRE REQUEST

Airborne Target Position Update

AIR FIRE REQUEST

Artillery Intelligence Report

ARTY INTL GRID

Fire Request Grid

ARTY FIRE RQST

Fire Request Quick

ARTY FIRE RQST

Fire Request Shift

ARTY FIRE RQST

Forward Observer Command

ARTY FIRE RQST

Subsequent Adjust

ARTY FIRE RQST

End of Mission and Surveillance

ARTY FIRE RQST

Message to Observer

MSG TO OBSERVER

Observer Location

OBSERVER READY

Intialization Message

BULK MESSAGE

All Other Messages

ATHS MESSAGE

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-66.82

Change 3

TM 1-1520-251-10

3.55 EMBEDDED GLOBAL POSITIONING SYSTEM

last NAV mode stored (i.e. Land or Sea) at power down of

INERTIAL NAVIGATION SYSTEM (EGI)

the aircraft. If no boresight numbers have been stored, the

NAV system will provide an advisory on the UFD, prompt-

The aircraft has two EGIs which use internal accelerome-

ing the aircrew for input for the respective EGI and doppler

ters, rate gyro measurements, and external sensor mea-

boresight numbers. Once the EGIs have been provided

surements to estimate the aircraft state. Only one EGI

the boresight numbers and the NAV mode, the EGIs will

provides aircraft state information to aircraft systems

determine the aircraft attitude. Upon finding attitude (i.e.

while the second EGI is for backup. The external sensor

attitude displayed on the FLT page), the NAV system will

measurements include range and range rate from the

provide the EGIs with position information from the prima-

GPS, velocity from the DRVS, barometric altitude, and

ry EGIs GPS (if tracking satellites) or the NAV system’s

manual position updates from the system processor (SP).

last stored position at power down. If no GPS or last

Incorporated within the EGI is an Inertial Measurement

stored present position is available, the NAV system will

Unit (IMU) and the processing functions for performing the

provide an advisory prompt on the UFD directing the crew

inertial navigation computations, GPS navigation solu-

to enter a present position. If a GPS position is given to

tions, receiver management, and Kalman filter estimates

the EGIs to align to, the EGIs initial position confidence on

to support all aircraft and weapon systems requirements.

the TSD UTIL page will read approximately .031 km. If a

stored position is given to the EGIs to align to, the EGI ini-

The data derived from the EGI includes :

tial position confidence on the TSD UTIL page will read

approximately 9.00 km. When a position is manually en-

• Acceleration

tered to the EGIs to align to on the ground, the EGI initial

• Angular rate

position confidence on the TSD UTIL page will read

approximately .050 km. Upon the EGIs being given a

• Attitude

present position, the NAV system will provide an align-

ment command to the EGIs. The EGIs alignment time is

• Heading

approximately 4 minutes on the ground. When an in-flight

• Velocity

alignment is performed by an INU reset the alignment

time, with GPS tracking satellites with crypto keys verified

• Position

and doppler velocities available, is approximately 35 se-

• Position Error Estimate

conds. If an in-flight alignment is performed with doppler

velocity aiding only (no GPS), the alignment time is

a. System Description. The EGI is a velocity

approximately 6 minutes. The time to alignment is not sig-

aided, strapdown, ring laser gyro based inertial unit. The

nificantly affected by temperature. The heading tape

EGI unit also houses the 5 - channel GPS receiver. The

symbology is displayed and TSD Map Frozen Cue is re-

ring laser gyro operates on an optical principle called the

moved, upon the primary EGI completing alignment. The

Sagnac Effect which deals with the properties of light

reaching of alignment of the secondary EGI is noted by

beams traveling in opposite directions around a closed

the removal of the inhibit selection bar beside the primary

loop. In operation, two laser beams are directed around

INU selection on the TSD UTIL page. There is no effect on

the ring in opposite directions; clockwise and counter-

the NAV system accuracy if the engines are started, or if

clockwise. If the ring rotates in the clockwise direction

the main rotor is turning during alignment. The EGIs han-

while the light beams are in transit then the clockwise

dling of velocity information from the GPS or doppler is en-

beam will seem to travel a shorter distance than the count-

tirely automatic. If the different sources of velocity in-

er-clockwise beam. This is used as a measure of rotation

formation should become absent, or of low quality for use

by observing the interference pattern created at the end of

by the EGI, the EGI will automatically weight the use of ve-

the ring when the two laser beams mix together; the faster

locity sources available according to the quality of the ve-

the rotation, the greater the interference pattern.

locity source. The EGIs Kalman filter uses the velocity

sources along with it’s accelerometers to calculate the ulti-

b. Operation. Initialization and alignment of the EGI

mate aircraft state information. The primary EGI provides

is automatically controlled by the primary System Proces-

this aircraft state information to those onboard systems

sor (SP) upon generator power up of the aircraft. Upon

requiring it. The velocity vector, acceleration cue, vertical

power up, the SP provides the boresight numbers stored

speed indicator, and heading tape are driven by the pri-

in non-volatile memory, for each EGI and doppler, and the

mary EGI aircraft state information.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-68

TM 1-1520-251-10

3.55.1 Global Positioning System (GPS).

maps and charts. Currently, many datums are used

throughout the world to produce maps. The standard for

a. System Description. The GPS receiver installed

US Forces is World Geodetic System 1984 (WGS 84).

in each EGI is a 5 - channel receiver. The receiver is capa-

However, many US Military Grid Reference System

ble of operating in either C/A code or encrypted P/Y code.

(MGRS) and foreign maps are still based on other da-

The Group User Variable (GUV) is the normal encryption

tums. Not correcting for different datums can cause signif-

key used. The GUV key is loaded into the EGI using a

icant errors. The coordinates for a point on the Earth’s sur-

KYK - 13 or equivalent device. When keyed the GPS re-

face in one datum will not match the coordinates from

ceiver will automatically use anti-spoof/jam capabilities

another datum for the same point. The Navigation System

when they are in use. The EGI keying connector is located

requires that the datum be entered with the coordinate

in the aft avionics bay on the multifill port panel. The EGI

data. If it is not entered, it will default to the present posi-

will retain the key through power ON/OFF/ON cycles. Be-

tion datum. The datum included with each set of coordi-

cause of safeguards built into the EGI, it is not considered

nate data allows the Navigation System to calculate the

classified when keyed. The antenna for the GPS receiver

compensations for different datums. The datum used is

is located on the top of the vertical stabilizer.

identified by a two digit number. Table 3-4 lists all of the

NOTE

datums that may be used with the Navigation System.

The GPS signal is vulnerable to jamming

Table 3-4. Datum Names and Codes

and spoofing operations. Under these con-

Datum Code Used

ditions some or all satellites may be un-

Datum

By Navigation

boxed and/or aircraft position, airspeed and/

Name/Description

System

or position confidence may be excessively

Adindan

high or changing quickly. Therefore continu-

ARC 1950

ous monitoring of the EGIs is required at all

Australian 66

times.

Bukit Rimpah: Indonesia

b. Operation. The operation of the GPS receiver is

Camp Area Astro

entirely automatic. The GPS receiver is powered when

the EGI is powered. If the GPS is keyed, it may take as

Djarkarta: Indonesia

long as 12 minutes to verify the key with the satellites. The

European 1950

GPS provides range and range rate information to the EGI

Geodetic Datum 1949

as well as position and time information to the System

Ghana

Processor (SP). When the GPS has tracked the first satel-

lite, it will update the date and time to the Navigation Sys-

Guam 1963

tem. There are no specific operator actions that may be

Gunung Segara: Indonesia

taken with the GPS system.

Gunung Serindung: Indonesia

c. Data Transfer Unit (DTU). The Data Transfer

Herat North

Unit (DTU) is located in the right hand forward pilots’ con-

Hjorsey

sole. The cartridge is programmed using the Aviation Mis-

Hu-Tzu-Shan

sion Planning System (AMPS). The AMPS writes the

coordinate files for waypoints, control measures, hazards,

Indian: Mean Value For Thailand

targets, and threats as well as routes and their associated

And Viet-Nam

waypoint numbers of destination. The NAV mode and

Ireland 1965

present position for the EGIs can be loaded from the car-

Kertau: West Malaysia

tridge if desired. On the aircraft, the SP handles all read-

Liberia 1964

ing and writing to the DTC, Whenever the Pilot/CPG

Local Astro

makes changes to any of the point files or routes, the SP

will automatically update the DTC with those changes,

Luzon

and will preserve those changes in case of a power tran-

Merchich

sient. If a power transient occurs, the SP will load the most

Montjong Lowe: Indonesia

recent data saved to the DTC. On initial power up on the

Minna

ground, the SP will load the initial mission data from the

North American Datum of 1927

DTC.

NAD 27 Alaska: Canada

3.55.2 Map Datums. Map datums are mathematical

models of the Earth used to calculate the coordinates on

Old Hawaii: Maui

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 2

3-69

TM 1-1520-251-10

Table 3-5. Datum Names and Codes (cont)

• If the aircraft has been moved over one

Datum Code Used

nautical mile since it’s last power down

Datum

By Navigation

(LAT/LONG data differs more than one min-

Name/Description

System

ute from actual position) and does not ac-

quire satellites within a short time (three-

Old Hawaii: Oahu

five minutes) after power up, the following

Old Hawaii: Kauai

procedures will help insure a good align-

England Scot Wale

ment.

Qornoq

a. Aircraft Moved Over One Nautical Mile Since

Sierra Leone 1960

Last power Down.

Campo Inchauspe: Argentina

(1) Manual Procedure.

Chua Astro: Paraguay

(a) Ensure that the current Zulu date and time

Corrego Alegre: Brazil

are entered on the TSD UTIL page.

Provisional South American 1956

(b) Check the left side of the TSD page to see

Yacare: Uruguay

if the HDG selection is displayed. If so, select PSN and

Tananarive: South American

enter the aircraft’s current position. (The HDG selection

1925

must be displayed when entering the current position.) If

Timbali: East Malaysia

HDG is not displayed or the HDG selection is removed

Tokyo: Japan: Korea: Okinawa

while the current position data is being entered, perform

Voirol

an INU1 and INU2 reset and then quickly (within one min-

Special Datum: Indian Special

ute) enter the aircraft’s current position.

Special Datum: Luzon

(2) DTU Procedure.

Tokyo Special

(a) If the correct aircraft current position has

WGS 84 Special Datum

been entered on the DTU, selecting Navigation on the

WGS 72 (Sino-Soviet Bloc)

DTU page will automatically update the current stored

WGS 84 Standard Datum*

position and reset the EGI(s) if the Position Confidence

(PC) values are greater than 0.031 Km.

*All FAA Sectionals and FLIP use this datum for coordi-

b. EGI Position Updates (GPS and/or Doppler Aid-

nate data.

ing Not Available).

3.55.3 EGI Operational Procedures.

(1) EGI position updates can be accomplished

anytime the PSN selection on the TSD page is present

CAUTION

(Primary EGI Position Confidence value greater than

0.050 Km).

The GPS system may provide erroneous

(2) If the position is not updated before the Position

system data during normal GPS opera-

Confidence factor increases to approximately 0.10 Km the

tions due to signal jamming and spoof-

EGI(s) may not apply the full correction to present position. In

ing operations. Verify proper EGI opera-

cases like this, several position updates may be required to

tion using the TSD UTIL page, position

minimize the differences between EGIs position and actual

checks, attitude and heading display

position. If the confidence factor gets too high, the EGIs may

against external references and back - up

reject all position updates. If this is the case, the aircraft will

instruments. If jamming or spoofing is

need to land, crew perform an INU1 and INU2 reset folllowed

suspected, perform position updates.

by an immediate present position update to align the EGIs.

Position updates will temporarily delay

(3) Should both EGIs become unaligned, only posi-

erroneous position errors only.

tion updates shall be attempted in flight. Position updates will

not realign the EGI, however, will allow pilot identification and

NOTE

delay erroneous EGI output to other systems. If unable to

• Dual in - flight EGI alignments are prohib-

position update, land as soon as practicable and perform an

ited.

on-ground manual reset of both EGIs. If the reset procedure

• Single in- flight alignments are authorized

fails to align one or both EGIs, the circuit breakers of one EGI

on the secondary EGI, however level un-

shall be pulled prior to takeoff. If landing is not practicable, the

accelerated flight with a constant heading

pilot shall decelarate the aircraft to 80KTAS or less, disable

must be maintained.

SAS (recommended) and monitor stabilator position.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-70

Change 3

TM 1-1520-251-10

3.56 AN/ASN-157 DOPPLER RADAR VELOCITY

which provides actual terrain clearance height. The in-

SENSOR (DRVS)

formation is displayed on the MPD and Helmet Display

Unit (HDU) and presented in audio format via the CIU for

The aircraft contains one DRVS, which consists of a re-

low altitude exceedances only.

ceiver/transmitter, antenna, signal data converter comput-

er, and a 1553B interface, all combined in one unit. The

Together the ADS and the Radar Altimeter provide the in-

DRVS provides aircraft referenced ground velocities to

formation necessary to display mean sea level (MSL) ter-

both EGIs as a velocity aiding source.

rain elevation for the aircraft present position under cer-

3.57 AIR DATA SYSTEM (ADS)

tain valid data parameters.

The ADS is comprised of two independent air data subsys-

3.59 AN/ARN-149 AUTOMATIC DIRECTION FINDER

tems. The Flight Management Computer (FMC) comprises

(ADF)

the first air data subsystem, and the Helicopter Air Data Sys-

tem (HADS) comprises the second air data subsystem.

The ADF receives frequencies from 100 to 2199.5 khz.

3.57.1 Helicopter Air Data System (HADS). The HADS

The ADF has two functional modes of operation: ANT and

is comprised of a High Integrated Air Data Computer

ADF. In ANT mode the ADF functions as an audio receiver

(HIADC), two Airspeed and Direction Sensors (AADS)

providing only an audio output of the received signal. In

probes, a Selector Valve Assembly (SVA), and a Utility Relay

ADF mode it functions as an automatic direction finder

Box (URB). The AADS probe senses airspeed magnitude,

system that provides a relative bearing to the station sig-

direction, and free airstream temperature. The AADS probe

nal as well as an audio output of the received signal.

interfaces indirectly through the SVA and URB to the HIADC.

3.60 NAVIGATION SUBSYSTEM CONTROLS AND

The right AADS probe temperature sensor is the only probe

DISPLAYS

to provide temperature information directly to the SP. The left

AADS probe temperature sensor is not used. The SP con-

Navigation subsystem controls and displays are inte-

trols the selection of which AADS probe provides information

grated into the following major components:

to the HIADC, based on status information from the HIADC.

• Multipurpose Displays (MPD)

The HIADC contains the processor and related hardware,

along with ambient and pitot pressure sensors, to compute

• Keyboard Unit (KU)

air mass related data.

• Up Front Display (UFD)

3.57.2 FMC. The FMC air data subsystem also contains

The MPD provides access to navigation and battle man-

the processor and related hardware to compute pressure alti-

agement formats in the AH - 64D. It correlates geographic,

tude, pitot airspeed and density altitude related information.

route, target, and threat information on a single Tactical

The FMC receives longitudinal and lateral True Air Speeds,

Situation Display (TSD) in one of four selectable map

static temperature, and longitudinal and lateral True Air

scales:

Speed non-filtered indirectly from the HIADC via the SP. The

FMC outputs, via the MUX bus, a common airdata message

• 1:500K

of the received HIADC and derived FMC airdata information

• 1:250K

to those onboard aircraft subsystems requiring it. The FMC

• 1:100K

provides the following data:

• 1:50K

• Pressure Altitude

• Density Altitude

The TSD frame of reference is relative to the aircraft head-

• Barometric Altitude

ing. In the PAN mode, the TSD frame of reference is de-

termined by the PAN controls. The TSD uses graphic

• Static Air Pressure

symbols to illustrate waypoints and routes, hazards,

• Sideslip Angle

phase lines, and various control measures. The KU is

• Lateral True Air Speed

used to enter information. The NAV system provides, on

• True Air Speed

the UFD, advisories for waypoint approach and passage,

• Calibrated Air Speed

entry of EGI boresight data, and position update.

• Longitudinal True Air Speed

3.61 MPD TACTICAL SITUATION DISPLAY (TSD)

• Static Temperature

The TSD page, (fig 3-64) controls navigation subsystem

• Air Density Ratio

moding. Selecting the TSD subsystem button or the TSD

3.58 AN/APN-209 RADAR ALTIMETER (RADALT)

button from the MENU page calls up the TSD page which

The aircraft contains one Radar Altimeter. The Radar Al-

integrates various navigation status windows, graphic

timeter consists of a receiver/transmitter and antennas

symbols, and control selections.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 3

3-71

TM 1-1520-251-10

• B6

THRT Page button

3.61.1 TSD Map Functionality. The TSD can be con-

figured for 2 different phases of the mission.The NAV

phase provides enroute information and the, ATK phase

provides information pertaining to the battle area Refer to

the chart in paragraph 3.69 for a complete list of items dis-

played in each phase.

The NAV phase provides enroute information and the,

ATK phase provides information pertaining to the battle

area Refer to the chart in paragraph 3.69 for a complete

list of items displayed in each phase.

3.61.2 RPT Page Button. Selection of the RPT button

will cause the report page to be displayed.

3.61.3 ASE Page Button. Selection of the ASE button

will cause the ASE page to be displayed. Refer to chapter

4A.

LBA0423A

3.61.4 PAN Page Button. Selection of the PAN button

will cause the PAN page to be displayed.

Figure 3-64. TSD Page

3.61.5 Present Position (PP) Button. Selecting the

• T1

RPT Page button

PP button commands display of the present position sta-

• T2

ASE Page button

tus window. The status window includes:

• T3

PAN Page button

• Latitude

• T4

PP button

• Longitude

• T5

COORD button

• UTM coordinate data

• T6

UTIL button

• Current Mean Sea Level (MSL) elevation of the

• L1

ADF button

terrain below the aircraft

• L2

HDG button

3.61.6 COORD Button. Selection of the COORD but-

• L3

PSN button

ton will cause the COORD page to be displayed.

• L4

REC button

• L5

JAM button

3.61.7 TSD UTIL Button. Selection of the UTIL button

will cause the UTIL page to be displayed.

• L6

SHOW button

• R1

ZOOM button

3.61.8

ZOOM Button. Selecting the ZOOM button

• R2

SC (Scale) button

magnifies the current map scale by a factor of 20 percent

about the ownship symbol. The size of the map display

• R3

CTR button

symbols do not change when ZOOM is selected.

• R4

CAQ (Cursor Acquisition) button

• R5

FRZ button

3.61.9 Map Scale (SC) Button. The map scale at sys-

tem power-up is 1:250K. The SC button allows the crew to

• R6

ACQ button

select between the four map scales: 1:50K, 1:100K,

• B2

PHASE button

1:250K, and 1:500K.

• B3

ZN button

3.61.10 Center (CTR) Button. Selecting the CTR but-

• B4

WPT Page button

ton toggles the ownship symbol to the center or lower one

• B5

RTE Page button

third of the map area on the display.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-72

TM 1-1520-251-10

3.61.11 Cursor Acquisition (CAQ) Button. The CAQ

UTM coordinates for the selected point. A UPT button is

button allows for rapid selection of stored coordinate point

displayed when the new coordinates have been entered.

symbols, FCR detected target symbols, or RFI detected

threat symbols as the acquisition source from the TSD.

b. Position Update (UPT) Button. The UPT but-

RFI detected threats are only selectable when the se-

ton is used to command the EGIs to update their present

lected sight is TADS or Helmet Mounted Display (HMD).

position with the new coordinates entered using the POSI-

Selecting the CAQ button freezes the TSD map.

TION button.

3.61.12 Acquisition (ACQ) Button. The ACQ button

3.61.17 Receive (REC) Button. The REC button is

provides the ability to select the desired acquisition

used to receive the most recent IDM message that can be

source for the selected sight. See Chapter 4 for descrip-

received from the TSD page. The REC button is only dis-

tion of selections.

played when a message is in the IDM buffer. The REC

button is displayed in WHITE. When the last message re-

3.61.13 Freeze (FRZ) Button. Selection of the FRZ

ceived is one of the following, selecting this button will

button provides the ability to freeze the desired map dis-

store the message in the appropriate current mission file

play or return to an active display.

location without being identified.

• WPT/HZD

3.61.14 ADF Page Button. Selection of the ADF but-

• CTRLM

ton will cause the ADF page to be displayed.

•

TGT/THRT

• FCR TGT RPT

3.61.15 Heading (HDG) Button. The system displays

the HDG button when the primary EGI estimated heading

• BDA RPT

error is greater than 10 degrees. The HDG button is dis-

• PF ZONE

played in WHITE. Selecting the HDG button brings up the

• NF ZONE

HEADING button which is used to enter a new heading.

•

PF/NF ZONE

a. HEADING Button. The HEADING button is used

• RFHO

to enter the correct aircraft heading through the KU. An

• PP RPT

UPT button is displayed when the new heading has been

• FARM RPT

entered.

When the last message received is one of the following,

b. Heading Update (UPT) Button. The UPT button

selecting this button will automatically switch to the RCVD

is used to command the system to update both EGIs with

MSG page of the ATHS-TACFIRE. See figure 3-60 in

the aircraft heading entered with the HEADING button.

paragraph 3.53.3 for more information.

• FREE TEXT T

3.61.16 PSN Button.

The PSN button is displayed in

• BDA RPT T

WHITE. The system displays the PSN update button

when the estimated radial position error from the primary

• FARM RPT T

EGI is greater than 50 meters (0.050 Km). Selecting PSN

• PP QUERY T

will cause the POSITION button to be displayed.

• PP RPT T

• MAYDAY T

a. POSITION Button. The POSITION button is

used to enter the correct LAT/LONG or UTM coordinates

• MOVE CMD T

through the KU. Selecting the POSITION button will arm

• SPOT RPT T

the KU for entry of the new coordinates. The system will

• NEG SPOT T

accept LAT/LONG or UTM coordinate data, with or with-

• AIR RQST T

out the entry of the datum. If a coordinate is entered with-

out a datum, then the system assumes whatever the cur-

• ARTY INTL T

rent datum being flown is what the coordinate being

• ARTY RQST T

entered is in. Rather than entering the coordinates using

• MSG 2 OBS T

the KU, the crew can also select any coordinate point

• OBSRV RDY T

(waypoint, hazard, control measure, or stored target/

threat) using the cursor control. The system loads the

• ATHS MSG

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-73

TM 1-1520-251-10

3.61.18 Radar Jammer (JAM) Button. This button is

3.61.26 Aircraft Heading Status Window. The aircraft

only displayed when the jammer is turned ON. Selecting

heading status window is displayed at the top center of the

the JAM button toggles the radar jammer between STBY

format

and OPER.

3.61.27 Map Frozen Cue. The TSD map frozen cue

3.61.19 SHOW Button. Selection of the SHOW button

(fig 3-65) is a bold dashed line displayed around the map

will cause the SHOW page to be displayed.

border and a frozen ownship symbol at the centered/ de-

centered location, to indicate the map is not in a dynamic

3.61.20 PHASE Button. The PHASE button allows the

state. The dynamic ownship (CYAN), TADS footprint, and

crew to select either NAV (Navigation) or ATK (Attack)

FCR footprint will continue to move about the viewable

mode of operation. The mode of operation affects which

area, and the heading and waypoint information will pro-

information is presented on the TSD page and which op-

vide continuous real - time situational awareness.

tions are available on the SHOW page.

The following control selections cause the map to freeze:

NOTE

3.61.21 Zone (ZN) Page Button. Selection of the ZN

button will cause the zone page to be displayed.

TSD Map Frozen Cue is in place until Prima-

ry EGI alignment is complete.

3.61.22 Waypoint (WPT) Page Button. Selection of

• ZN page

the WPT button will cause the waypoint page to be dis-

played.

• CAQ button

• FRZ button

3.61.23 Route (RTE) Page Button. Selection of the

• PAN page buttons

RTE button will cause the route page to be displayed.

3.61.24 Threat (THRT) Page Button. Selection of the

THRT button will cause the threat page to be displayed.

3.61.25 Next Waypoint Status Window. The next

WAYPOINT status window is displayed in the lower left

area of the MPD. It is displayed in the NAV mode to pro-

vide information regarding the current active waypoint be-

ing directly flown to or the current flight route being flown.

The status window includes the following:

a. Next Waypoint Letter and Number. The next way-

point letter will be a “W”, “H”, or “C”. The next waypoint

number will be a number from 1 to 50 if the next waypoint

letter is a “W” or “H”, or a number from 51 to 99 if the next

waypoint letter is a “C.”

b. Distance To Go. The distance to go will be dis-

played in either kilometers or nautical miles based on the

unit setting on the FLT SET Page.

LBA2607A

c. Time To Go. The time to go will display either

Figure 3-65. TSD Map Frozen Cue

minutes and seconds if the time is <5 minutes, or hours

and minutes if the time is >5 minutes and >10 hours.

3.61.28

Next Waypoint Heading Status Window. The

d. Ground Speed. If the current calculated ground

next waypoint heading status window is displayed at the

speed is valid, it will be displayed in kts.

bottom center of the format.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-74

TM 1-1520-251-10

3.61.29 Endurance Status Window. The EN status

3.62.4 Waypoint/Hazard

(WPTHZ) Icon. A WPTHZ

window is displayed in the lower right area of the format to

icon indicates the location, type and number of a waypoint

indicate total fuel endurance time at the present power

or hazard stored in the waypoint/hazard coordinate data

setting. Calculations shall include fuel in internal and aux-

files. Hazard icons are displayed in YELLOW. The way-

iliary tanks

(if installed). The EN label is displayed in

point/hazard number is displayed to the left of the way-

WHITE and flashes when the total fuel endurance is 20

point or hazard symbol. The waypoint/hazard number will

minutes or less.

be displayed inverse video when the following conditions

exist:

3.61.30

Wind Direction/Velocity Status Win-

dow. Wind direction and velocity is selectively displayed

a. When on the RTE page with the ADD button se-

in the NAV and ATK phases, in the lower right corner of

lected and the waypoint/hazard is the currently selected

the TSD. If wind speed is less than 5 knots, the label

waypoint/hazard.

CALM is displayed. When Nr is less than 50% and wind

b. When on the RTE page with the RVW button se-

speed is greater than 45 knots, wind speed is displayed in

lected and the waypoint/hazard is the currently selected

YELLOW.

waypoint/hazard.

3.61.31 Map Border Symbol. The map border symbol

c. When on the WPT page with the RVW or EDT but-

defines the map area on the TSD page and is approxi-

ton selected and the waypoint/hazard is currently the ac-

mately 5 by 5 in. square. Range ticks are displayed along

tive waypoint/hazard.

the left and bottom of the map border symbol. In addition,

numeric range values are displayed at every other range

d. When on the WPT page with the DEL or XMIT but-

tick along the inside left border beginning at the bottom

ton selected and the waypoint/hazard is currently the ac-

range tick. Although the map border symbol remains

tive waypoint/hazard.

constant in size and location on the page, the range tick

The valid range for the waypoint/hazard numbers is 1 to

locations and numeric values change according to the

50. There are 6 different waypoint symbols and 4 hazard

states of the map scale button, the ZOOM button, the

symbols that can be displayed on the TSD (App D). Way-

CTR button, and the KM/NM button on the FLT page.

points on the TSD page are always displayed in both

phases. Hazard symbols are always displayed in the NAV

3.62 TSD MAP SYMBOLOGY

phase, but are selectable in the ATK phase via the SHOW

The following paragraphs describe various symbols and

page. When the waypoint/hazard files are loaded from the

the conditions under which they appear within the TSD

DTC, a number is stored for each data file saved that indi-

map area. The symbols are displayed in geographic fidel-

cates the “SAFE SET” for that loaded DTC file (maximum

ity according to the map scale selected. The map is head-

of 25 points). This prevents overwriting a ”SAFE SET” file

ing-up oriented and the display of any particular symbol

via normal storing procedures. Data can be deleted from

depends upon the PHASE selection and the state of the

SAFE SET via the DEL button or changed from within the

control selections on the SHOW page. See paragraphs

ownship via the EDT button. An incoming IDM message,

3.68.1 and 3.68.2.

if elected to be stored, can also overwrite a SAFE SET.

3.62.1

Ownship Symbols. The dynamic ownship

For example: If 10 waypoints/hazards are loaded through

symbol is displayed in CYAN and represents the helicop-

the DTC, and then point number 11 is stored after DTC

ter position within the dynamic mapping area. Specifically,

loading, the SP will not attempt to store a waypoint/hazard

the dot in the center of the ownship symbol depicts the

with an index less than 11. If the DP requests to store a

present position of the helicopter relative to the map sym-

point with an index of less than 11, then the SP will do this.

bols. The frozen ownship symbol is displayed in WHITE,

3.62.5 Control Measure (CTRLM) Icon. A CTRLM

with stopped rotors, and remains at the centered or de-

icon indicates the location, type and number of a control

centered position as selected.

measure stored in the coordinate data files. Friendly con-

3.62.2 Route Line. The route line is a straight line con-

trol measure icons are displayed in CYAN and enemy

necting the points (waypoints, hazards, and control mea-

control measure icons are displayed in RED. The control

sures) in the current route. The route line becomes partial

measure type and number is usually displayed within the

intensity when the active destination point is other than

CTRLM icon. The point number will be displayed in in-

the next point in the current route.

verse video when the point is the currently selected or ac-

tive point. The valid range for the point numbers is 51 to

3.62.3

Direct-To Line. The route direct-to line is a

99. Present position responses are stored in C93 through

straight line indicating a direct course to the selected

C99 and are displayed on the TSD with the helicopter

point.

icon. (Appx D).

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-75

TM 1-1520-251-10

3.62.6 Threat/Target (THRT/TGT) Icon. The THRT/

feedback on the map. The TADS footprint symbol displays

TGT icon indicates the location/number of a target or the

when TADS is the selected sight for the CPG or either

location/type of a threat stored in the coordinate data files.

crewmember has linked TADS to his current selected

THRT/TGT icons are displayed in RED. When the THRT/

sight.

TGT icon is a stored target, the icon is a T followed by the

target file number. When the THRT/TGT icon is a pre-

3.62.12 FCR Footprint Symbol. The FCR footprint

planed target/threat, the icon may be a symbol with a 2

symbol is a perimeter of partial intensity GREEN lines

digit identifier. The target/threat number will be displayed

which originates at the ownship symbol to indicate the

inverse video when the threat has been selected on the

FCR scan footprint or FCR scan azimuth and area of cov-

THRT page in the RVW, EDIT, DEL or XMIT modes.

erage within the map area. The partial intensity GREEN

lines change to full intensity WHITE lines when the FCR is

The valid range for the target/threat numbers is 1 to 51

scanning. An azimuth tick displays at the midpoint of the

The FCR target coordinate data is stored in T50 when the

arc within the FCR footprint symbol to provide precise azi-

CAQ button is used to select an FCR target symbol. The

muth feedback on the map. The FCR footprint symbol dis-

coordinate data for the ATHS air fire mission target is

plays when FCR is the selected sight for either crewmem-

stored in T51. T51 does not exist on the DTU and is not

ber or either crewmember has linked FCR to his current

transmitted in any of the AFAPD messages. The T51 tar-

selected sight.

get cannot be edited nor can new targetas be added/

stored into T51 via the THRT page. The T51 ATHS TAR-

3.62.13 FCR Target Symbols. FCR target symbols

GET can be deleted when the HFMSN button is not

within the map area indicate target information detected

selected. The SAFE SET also applies to the targaets/

during an FCR scan burst. Two types of target symbols

threats file.

are displayed: FCR priority target symbols and FCR total

target symbols. FCR priority target symbols representing

3.62.7 ATHS TARGET Icon. The ATHS TARGET icon

moving targets may move due to updated target position

is a large octagonal white icon. The ATHS TARGET icon

from the radar. The target placement within the map area

is displayed around T51 when HFMSN is selected.

following each scan will indicate the direction and appar-

ent rate of movement of those targets. The high priority

3.62.8 LINE Icon. The LINE icon indicates the location

FCR targets display full intensity YELLOW; lesser priority

and name of a geographic line stored in the coordinate

targets are partial intensity YELLOW and half size (maxi-

data files. The designated label indicates the type of LINE

mum targets displayed is 256). When the TSD 1:250K

icon.

map scale is selected, high priority FCR targets display as

full intensity three pixel squares, and low priority FCR tar-

3.62.9

AREA Icon. The AREA icon indicates the

gets display as partial intensity three pixel squares. When

boundary location, label, and number of a target engage-

the TSD 1:500K map scale is selected, no FCR targets

ment area stored in the coordinate data files. The engage-

will be displayed. However, the partial intensity FCR foot-

print remains.

ment area label/number (EA##) of the AREA icon is at the

center point of the geographic area.

3.62.14 RFI Threat Icon Symbol. When a threat is de-

3.62.10 ASE Footprint Symbol. The ASE footprint

tected by the RFI, an RFI threat icon symbol is displayed

symbol is a partial intensity square border line within the

along the outside perimeter of the ASE footprint symbol

map border symbol providing a perimeter line or footprint

within the map area to indicate azimuth (relative direction)

which segregates RLWR (inside) and RFI (outside) threat

and threat type information on the TSD page. Friendly

symbols. It is automatically displayed on the TSD page

emitter icons are displayed in CYAN and enemy/gray

when a threat is detected by the RLWR.

threat icons are displayed in YELLOW. Stale threat icons

are displayed in partial intensity.

3.62.11 TADS Footprint Symbol. The TADS footprint

symbol is a partial intensity GREEN straight line which

3.62.15 RLWR Threat Icon Symbol. When a threat is

originates at the ownship symbol and changes in length

detected by the RLWR, a RLWR threat symbol is dis-

and azimuth to indicate TADS LOS positioning within the

played along the inside perimeter of the ASE footprint

map area. The partial intensity GREEN line changes to a

symbol within the map area to indicate azimuth (relative

full intensity WHITE line when TADS is lasing. An open

direction) and threat type information on the TSD page.

center crosshair symbol displays full intensity at the end of

Enemy/gray threat icons are displayed in YELLOW. Stale

the TADS footprint symbol to provide precise position

threat icons are displayed in partial intensity.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-76

TM 1-1520-251-10

3.62.16 Shot - At Icon. This system stores target coor-

dinates in the coordinate data shot-at file each time a tar-

get is engaged (actual or simulated) with the Hellfire Mis-

sile system by the ownship in the ownship file. For RF

missile engagements, the coordinates of the NTS target

are stored to the shot-at file. For SAL autonomous missile

engagements (LRFD code = missile seeker code), the tar-

get coordinates stored are derived using the CPG’s sight

and range source regardless of which crewmember con-

ducts the engagement. For SAL remote missile engage-

ments (LRFD missile seeker code), the target coordi-

nates stored are those last stored in the shot-at file. If no

previous launches have occurred since power up, the lati-

tude, longitude, and altitude values stored to the shot-at

file will be all zeros. The shot-at icon is an X symbol with

no label or number. The X symbol will be on top of the tar-

get symbols if the target was engaged after the last scan,

otherwise it will be below target symbols. A total of 16

locations are available in the ownship file.

LBA2399

3.62.17 IDM Shot-At Icon. The IDM shot-at icon is a

Figure 3-66. TSD UTIL Page

partial intensity X symbol with no label or number. It repre-

sents locations where targets have been engaged by air-

The TSD UTIL page provides access to the following

craft other than the ownship. The IDM provides target

unique functions:

coordinates for storage in the coordinate data shot-at file

after being accepted by the crew. A total of 112 locations

• T6

TSD UTIL button

are available in the IDM shot-at file.

• L1

INU1 RESET button

• L2

INU2 RESET button

• L3

PRIMARY button

3.62.18 HSI Icon. The HSI icon is a Magnetic Compass

Rose which can be selectively displayed in the NAV and

• L4

ALIGN STATionary button

ATK phases. The HSI is always displayed on the ADF/

• L5

ALIGN MOVE button

ADF UTIL pages.

• L6

ASE AUTOPAGE button

• R1

TIME button

3.62.19 Waypoint Approach and Passage Adviso-

• R2

SYSTEM TIME button

ries. When neither crewmember has the dynamic map

• R3

SYSTEM DATE button

displayed, or the TSD displays are frozen, an advisory

• R4

DOPPLER button

message is displayed on the UFD when the aircraft is

• R5

DATUM DISPLAY button

within one minute of passing a waypoint or upon waypoint

passage.

• R6

DATUM button

• B2

Navigation Mode (NAV) button

3.63.1 INU1/2 RESET Button. The INU1/2 RESET but-

3.63 TSD (UTIL) PAGE

tons resets the INU1/2. It is primarily used when the data

from the INU is invalid or inaccurate.

The TSD UTIL page, (fig. 3-66) can be used to initiate

3.63.2

PRIMARY Button. The PRIMARY button is

navigational system alignments, reset the INUs, enable

used to select the active INU: INU1/2. The button state in-

the Doppler, select the datum for display, modify the cur-

dicates the active (primary) INU whether selected auto-

rent datum, and enter system time and date data. The

matically by the system or manually by the operator. It is

TSD UTIL page also provides both INUs position confi-

selectable only when both INUs are operational and equal

dence.

in status.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-77

TM 1-1520-251-10

3.63.3

ALIGN STATIONARY (STAT) Button. The

3.63.9 DOPPLER Button. The DOPPLER button en-

ALIGN STAT button is displayed only when the state of

ables or disables the Doppler.

the NAV mode button is set to SEA and the primary and/or

secondary INU has a position from the GPS or has been

3.63.10 DATUM DISPLAY Button. The DATUM DIS-

manually entered and that it is ready to initiate a stationary

PLAY button enables diaplay of datum information within

navigation system alignment.

various status windows.

3.63.11 DATUM Button. The DATUM button allows

3.63.4 ALIGN MOVE Button. The ALIGN MOVE but-

entry of a new datum in place of the default datum entered

ton displayed only when the state of the NAV mode button

at the mission planning station. If the pilot enters a D using

is set to SEA and the primary and/or secondary INU has a

the KU, the system returns to the default datum and auto-

position from the GPS or has been manually entered and

matic datum updates, based on the current waypoints and

that it is ready to initiate a moving navigation system align-

their datums in the current route being flown.

ment. These are only displayed when on the ground in

SEA mode.

NOTE

When the INU is reset or power is applied to

3.63.5

ASE AUTOPAGE Button. The ASE AUTO-

the INU, the MPD will not display symbols

PAGE button is used to select the state or condition of an

that use INU information until the INU deter-

acquiring threat system which causes autopaging of

mines that its data is valid.

threat warning information. The ASE AUTOPAGE is

crewstation independent. The available selections are:

3.63.12 Navigation (NAV) Mode Button. The NAV

• SEARCH

mode button selects the navigation mode: (LAND or SEA)

The primary System Processor (SP), upon generator

• ACQUISITION

power up, automatically controls initialization and align-

ment of the EGIs of the aircraft. Upon system power up,

• TRACK

the last NAV mode stored LAND or SEA, at power down

• OFF

will be selected automatically by the SP. The flight crew

should confirm the correct moding of LAND or SEA

(SEA-Stationary or Moving) for the initialization/align-

3.63.6 TIME Button. The TIME button sets the display

ment process based on the current aircraft configuration.

mode of time to LOCAL or ZULU.

After takeoff, (in-flight) the Navigation Mode switch is used

to select LAND or SEA using the criteria of where the air-

3.63.7

SYSTEM TIME Button. The SYSTEM TIME

craft is to be primarily operated for the mission. The LAND

button sets the current LOCAL or ZULU time. The ZULU

mode is used when operating primarily over terrain. The

time must be entered before the LOCAL time. When a

SEA mode is used when operating primarily over water.

ZULU System Time is entered, the system processor sets

When the LAND or SEA mode selection is made in-flight,

its clock to the entered time, and sends this time to the re-

there will be no apparent change to the flight crew (with

spective primary and secondary EGIs if their respective

the exception of the displayed LAND or SEA mode) but

GPS is not tracking enough satellites. To determine if the

the navigation system will change the weighting of the

GPS used the time, monitor the Satellite Status window. If

Doppler velocity data to provide the best navigational ac-

the time entered is used, the respective GPS Satellite ID

curacy (most significantly during degraded navigation

numbers in the Satellite Status window, will momentarily

modes).

blank, then reappear.

3.63.13

POSITION CONFIDENCE Status Win-

3.63.8 SYSTEM DATE Button. The SYSTEM DATE

dow. The POSITION CONFIDENCE status window in

button sets the current date. When a system date is en-

the upper area of the page presents position confidence

tered, the system processor sets its Date to the entered

status for INU1 and INU2. This value represents the 95%

system date, and sends this date to the respective primary

probable radial position error of the position estimate of

and secondary EGIs if their respective GPS is not tracking

latitude and longitude. It is displayed in WHITE when the

enough satellites. To determine if the GPS used the date,

value is greater than 50 meters, FAILED, or when the INU

monitor the Satellite Status window. If the date entered is

is not installed.

used, the respective GPS Satellite ID numbers in the Sat-

ellite Status window, will momentarily blank, then reap-

3.63.14 DOPPLER DATA Status Window. The DOP-

pear.

PLER DATA status window provides the Doppler aiding

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-78

Change 2

TM 1-1520-251-10

status of INU1 and INU2: USED, REJECTED (WHITE), or

MEMORY (WHITE).

3.63.15 SATELLITE Status Window. The SATELLITE

status window provides the satellite number(s) that the

EGI is attempting to track. The box indicates that a partic-

ular satellite is being tracked.

3.63.16 KEY TYPE Status Window. The KEY TYPE

status window provides an indication to the crewmember

what type of key has been loaded into GPS receivers 1

and 2. If a Group Unique Variable (GUV) is loaded this sta-

tus window will show GUV. If a Weekly key is loaded the

status window will be blank, but the GPS keys status win-

dow will indicate LOADED.

LBA3017

3.63.17

KEYS LOAD Status Window. The KEYS

Figure 3-67. PAN Page

LOAD status window provides the current state of the

GPS keys loaded into GPS receivers 1 and 2. The follow-

• T2

LAST PAN button

ing states are valid for display:

• T3

PAN Page button

• T4

Left Pan HDG Arrow

• ERASE FAIL (WHITE)

• T5

Pan HDG Data Entry button

• T6

Right Pan HDG Arrow

• NONE (WHITE)

•

Pan POINT button

• L2

Next WPT in RTE button

• CORRUPT LOAD (WHITE)

•

Forward in RTE Arrow button

• L4

Back in RTE Arrow button

• VALID

•

Last WPT in RTE button

• R1

ZOOM button

• INCORRECT (WHITE)

• R2

SC (Scale) button

• R3

CTR button

• VERIFIED

• R5

FRZ button

• LOADED

3.64.1

LAST PAN Button. Selection of the LAST PAN

button returns the live map to the last panned location and

heading.

3.64 PAN PAGE

3.64.2 PAN. Selection of the PAN button will cause the

PAN page to be displayed. Additionally, the cursor is ac-

tive for selection of a pan destination. A cursor footprint

the size of the map and centered around the cursor can be

The PAN page ( fig 3-67) gives the crew a limited TSD

used to rapidly pan about the display.

map scrolling capability. The TSD may be scrolled along

the current route, to a coordinate data file location, UTM/

3.64.3 HDG Left/Right Arrow Buttons. Pressing the

LAT - LONG coordinate or to a cursor selected point.

left/right arrow buttons momentarily changes the pan

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-79

TM 1-1520-251-10

heading in 1 degree increments. Pressing and holding

the next waypoint or back(down) to the previous waypoint

changes the heading at 40 degrees per second.

in a single step or continuous at 2 Hz rate if pressed and

held.

3.64.4 HDG Button. The HDG button is used for data

entry of the pan heading.

3.64.7 Forward/Backward in RTE Button. Selecting

the RTE button momentarily pans forward (up) to the next

3.64.5 POINT Button. Selection of the POINT button

waypoint or back(down) to the previous waypoint in small

allows entry of UTM/LAT - LONG coordinate or a coordi-

increments or continuous at 20 Hz if pressed and held.

nate data file point number for pan destination.

3.64.8 Freeze (FRZ) Button. Selection of the FRZ but-

3.64.6 Next/Last WPT in RTE Buttons. Selecting the

ton provides the ability to freeze the desired map display

Next/Last WPT buttons momentarily pans forward (up) to

or return to an active display.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-80

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3.65 ADF PAGE

• L3

NDB FREQUENCY (FREQ) button

• L5

LAST FREQUENCY (LAST FREQ)

NOTE

•

ZOOM button

ADF MODE, FREQ, TEST, LAST, TONE,

• R2

SCALE button

IDENTIFY, EMER 500, EMER 2182 options

will not be displayed if the ADF system is not

• R3

CTR button

enabled.

• R4

TONE button

• R5

IDENT button

The ADF page (fig 3-68 ) is used to control the ADF Sys-

• R6

TEST button

tem and provide the symbology necessary to perform

ADF navigation. A compass rose, heading select indicator

• B2

EMERgency 500 Tune button

(with inverse heading), and Non Directional Beacon iden-

• B2

EMERgency 2182 Tune button

tifier/frequency status are displayed over the moving map

display. The next WAYPOINT status window is displayed

3.65.1

TIMER START/STOP Button. The TIMER

in the lower left portion of the page. The ENDR and WIND

START/STOP button is used to start/stop the digital timer

status windows are displayed in the lower right portion of

readout.

the page. The moving map is always dynamic unless the

INU data is invalid. NDB symbols whose free text match

3.65.2

TIMER RESET Button. The TIMER RESET

one of the presets can be selected from the ADF and ADF

button is used to reset the digital timer readout displayed

UTIL. When selected the the ADF will be tuned to the

in the TIMER STATUS WINDOW.

matching preset.

3.65.3 HDG Button. The HDG button is used to set the

numeric magnetic heading value for the Heading Select

Indicator. The HDG button is only displayed if the INU is

operational.

3.65.4 NDB FREQ (Frequency) Button. FREQ button

is used to manually set the numeric value of a NDB fre-

quency or commercial broadcasting station.

3.65.5 LAST FREQ (Last Frequency) Button. LAST

FREQ button is used to toggle between the current and

previously tuned NDB frequency or commercial broad-

casting station.

3.65.6 TONE Button. Selecting the ADF TONE button

causes the normal audio to be replaced by the 1000 Hz

tone for continuous wave (CW) operation.

3.65.7 IDENTIFY Button. Selecting the ADF IDENTI-

FY button causes the normal audio output to be filtered for

clarity.

LBA3018

3.65.8 TEST Button. The TEST button is used to test

Figure

3-68.

ADF Page

the ADF System circuits and strength of the station signal

received. Selecting the TEST button causes the ADF

Bearing Pointer to momentarily shift approximately 90°

The ADF page contains the following unique buttons:

right from the present bearing for several seconds then

• T1

TIMER START/STOP button

return to the original bearing. A faulty system circuit could

possibly cause the ADF Bearing Pointer to shift to a value

• T2

TIMER RESET button

other than approximately 90° right. The rate at which the

• T6

ADF UTIL button

ADF Bearing Pointer returns to the original bearing indi-

• L2

Selected Heading (HDG) button

cates the relative strength of the station signal received.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-81

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3.65.9 EMER (Emergency) 500/2182 Buttons. The

EMER buttons are used to rapidly tune the ADF receiver

to the international distress frequencies.

3.65.10 Timer Status Window. The timer status win-

dow is used to display the elapsed time of the timer. The

window has a format of H:MM:SS and a range of 0:00:00

to 9:59:59.

3.65.11 NDB Status Window. The NDB status window

displays in the upper right area of the ADF page to indi-

cate the current frequency, station identifier letters, and

morse code to which the the ADF system is tuned. The

station identifier letters and morse code are displayed

only when there is an identifier associated with the tuned

frequency or the tuned frequency is an emergency fre-

quency. If the frequency is invalid, it will be displayed

WHITE.

3.65.12 Compass Rose. The circular arrangement of

LBA3019

tic marks (compass rose) rotates about a point to provide

the instantaneous magnetic heading of the helicopter. The

Figure 3-69. ADF UTIL Page

compass rose is constructed with tic marks of three sizes:

long tics for 30° increments, medium tics for 10° incre-

The ADF UTIL page contains the following unique but-

ments, and short tics for 5° increments. Cardinal point

tons:

heading values are displayed within the the compass rose

and remain upright as the compass rose rotates on the

• T5

TUNE button

page. The compass rose is placed at either the centered

• L2 - L6

ADF PRESET buttons

or decentered position based on current selection of the

CTR button.

• R1

ADF MODE button

• R2 - R6 ADF PRESET buttons

3.65.13

ADF Bearing Pointer. The ADF bearing

• B4

ADF Preset Identifier (ID) button

pointer is displayed from the edge of the magnetic com-

pass rose, through the ownship, to the edge of the display

• B5

ADF Preset Frequency (FREQ) button

to indicate magnetic bearing of the current signal being re-

• B6

ADF button

ceived by the ADF system.

3.66.1 TUNE Button. The NDB preset TUNE button is

used to tune the ADF receiver to the frequency of the se-

3.65.14 Heading Select Indicator. The heading select

lected ADF preset station button.

indicator is displayed on the periphery of the magnetic

compass rose to indicate the magnetic heading value

3.66.2 ADF Preset Buttons. The ADF preset buttons

entered at the HDG select button. A heading bug recipro-

are used to select specific ADF preset stations for tuning

cal is also displayed on the periphery of the compass

or editing.

rose.

3.66.3 MODE Button. Selecting the ADF MODE button

3.66 ADF UTILITY (UTIL) PAGE]

displays ANT.

The UTIL page (fig 3-69 ] ) is used to provide access to the

3.66.4 ID Button. The NDB preset identifier ID button is

stored preset ADF frequencies and utility selections. The

used to enter the NDB station identifier letters for the se-

presets can be edited or tuned based on crew inputs.

lected ADF preset button.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-82

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3.66.5

FREQ Button. The NDB preset frequency

Table 3-6. Abbreviation Listing Page 1 Mode

FREQ button is used to enter the NDB station frequency

value for the selected ADF preset button.

3.66.6 ADF Button. Selecting the ADF button alter-

nately toggles the ADF System between enabled and dis-

Abbreviation Name

abled.

WAYPOINTS

3.67 ABBREVIATION (ABR) PAGE

Comm Check Point

The ABR page, (fig 3-70), a view only page, provides a list

Landing Zone

of the correct two-letter identifications for a specific way-

Passage Point

point, hazard, control measure, target, or threat. The ab-

breviation page also includes the two-digit identifier for

Release Point

each of the datums associated with its spheroid.

Start Point

NOTE

Waypoint

There are no unique buttons on the ABR

page.

HAZARDS

Tower over 1000 (YELLOW)

Tower Under 1000 (YELLOW)

Wires Power (YELLOW)

Wires Tele/Elec (YELLOW)

GENERAL CTRLM

Air Control Point

Airfield General

Airfield Instrum

Airfield Lighted

Arty Fire Pt 1

Arty Fire Pt 2

Assembly Area

LBA1927

Battalion

Battle Position

Figure 3-70. ABR Page

Bridge or Gap

All available abbreviations are listed in tables 3-6 through

Brigade

3-13 in their appropriate page mode.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 1

3-83

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Table 3-7. Abbreviation Listing Page 2 Mode

Table 3-8. Abbreviation Listing Page 3 Mode

ABBREVIATION NAME

Chemical Friend (CYAN)

Checkpoint

Decon Friend (CYAN)

Company

Engineers Friend (CYAN)

Corps

ElecWar Friend (CYAN)

Division

Growth CTRLM FR1 (CYAN)

FARP Fuel Only

Growth CTRLM FR2 (CYAN)

FARP Ammo Only

Growth CTRLM FR3 (CYAN)

FARP Fuel/Ammo

Fixed Wing Friend (CYAN)

Forwd Assemb Area

Field Arty Friend (CYAN)

Grnd Lite/Sm Town

Heli Attack Frien (CYAN)

Holding Area

Heli Genrl Frien (CYAN)

IDM Subscriber

Hospital Friend (CYAN)

NBC Area

Infantry Friend (CYAN)

NDB Symbol

Mech Infantry Fr (CYAN)

Railhead Point

Medical Friend (CYAN)

Regiment/Group

TOC Friend (CYAN)

US Army

Unit ID Friend (CYAN)

FRIENDLY CTRLM

ENEMY CTRLM

ADU Friendly (CYAN)

Air Assault Enemy (RED)

Air Assault Frien (CYAN)

Air Cavalry Enemy (RED)

Air Cavalry Frien (CYAN)

Air Defense Enemy (RED)

Airborne Friend (CYAN)

Airborne Enemy (RED)

Armor Friend (CYAN)

Armor Cav Enemy (RED)

Armor Cav Friend (CYAN)

Armor Enemy (RED)

Av Maint Friend (CYAN)

Av Maint Enemy (RED)

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-84

TM 1-1520-251-10

Table 3-9. Abbreviation Listing Page 4 Mode

Table 3-10. Abbreviation Listing Page 5 Mode

ABBREVIATION NAME

ADU Growth 1

Av Maint Enemy (RED)

ADU Growth 2

Chemical Enemy (RED)

ADU Growth 3

Decon Enemy (RED)

ADU Growth 4

Engineers Enemy (RED)

ADU Spada

Elec War Enemy (RED)

ADU M1983

Field Arty Enemy (RED)

ADU 2S6/SA - 13

Fixed Wing Enemy (RED)

Gun Air Defense

Growth CTRLM EN1 (RED)

Gun Generic

Growth CTRLM EN2 (RED)

Gun Marksman

Growth CTRLM EN3 (RED)

Gun Sabre

Heli Attack Enemy (RED)

Gun Self Prop

Heli Genrl Enemy (RED)

Gun Towed

Hospital Enemy (RED)

Gun ZSU-23

Infantry Enemy (RED)

Naval Systems

Mech Infantry En (RED)

SAM Blowpipe

Medical Enemy (RED)

SAM Bloodhound

TOC Enemy (RED)

SAM Chapparal

Unit ID Enemy (RED)

SAM Crotale

SAM CSA-2/1/X

PREPLANNED TGT/THRT

SAM Hawk

ADU AMX - 13 (RED)

SAM Javelin

ADU Aspide (RED)

SAM Patriot

ADU Enemy (RED)

SAM Redeye

ADU Gepard (RED)

SAM Rapier

ADU Growth 1 (RED)

SAM Roland

SAM SA-1

SAM SA-2

SAM SA-3

SAM SA-4

SAM SA-5

SAM SA-6

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-85

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Table 3-11. Abbreviation Listing Page 6 Mode

Table 3-12. Abbreviation Listing Page 7 Mode

ABBREVIATION NAME

BESSEL

BES

SAM SA-6 (RED)

Bukit Rimpah Indo

SAM SA-7 (RED)

Djarkarta Indo

SAM SA-8 (RED)

Gunung Segara

SAM SA-9 (RED)

Gunung Serindung

SAM SA-10 (RED)

Montjong Low Indo

SAM SA-11 (RED)

Tokyo Jap Kor Oki

SAM SA-12 (RED)

Tokyo Special

SAM SA-13 (RED)

SAM SA-14 (RED)

CLARK 1866

CL6

SAM SA-15 (RED)

Guam 1963

SAM SA-16 (RED)

Luzon

SAM SA-17 (RED)

NAD 27 ConUS

SAM SAMP (RED)

NAD 27 Alaska Can

SAM SATCP (RED)

Old Hawaii Maui

SAM Self Prop (RED)

Old Hawaii Oahu

SAM Shahine/R440 (RED)

Old Hawaii Kauai

SAM Starstreak (RED)

Luzon Special

SAM Tigercat (RED)

CLARK 1880

CL0

SAM Stinger (RED)

Adindan

SAM Towed (RED)

ARC 1950

SAM Unknown (RED)

Ghana

SAM Vulcan (RED)

Liberia 1964

Radar Battl Surv (RED)

Merchich

Radar TGT Acq (RED)

Minna

RBS-70 (RED)

Sierra Leone 1960

Target Ref Point (RED)

Voirol

EVEREST

EVE

Indian Thai Viet

Indian Special

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-86

TM 1-1520-251-10

Table 3-13. Abbreviation Listing Page 8 Mode

Symbols will be displayed or removed as buttons are se-

lected if they are in the displayed map area.

ABBREVIATION NAME

3.68.1 SHOW Page - NAV PHASE.

INTERNATIONAL

INT

Camp Area Astro

The NAV PHASE of the SHOW page (fig 3-71) is used to

European 1950

provide access to navigation data.

Geodetic Dat 1949

Herat North

Hjorsey

Hu-Tzu-Shan

Qornoq

Campo I Argentina

Chua A Paraguay

Corrego A Brazil

Prov 1956 S Amer

Yacare Uraguay

Tananarive Observ

MODIFIED AIRY

MAI

Ireland 1965

MODIFIED EVEREST

MEV

LBA3020

Kertau W Malaysia

Figure

3-71.

SHOW Page - NAV PHASE

Timbalai E Malays

The NAV PHASE of the SHOW page contains the follow-

VARIOUS

VAR

ing unique buttons:

Local Astro

•

HSI button

• L1

INACTIVE ZONES button

WORLD GEO SYS 72

W72

• L2

AREAS button

WGS72 Sino-Soviet

•

LINES button

• L4

WAYPOINT DATA button

WORLD GEO SYS 84

W84

• L5

PLANNED TGT/THRT button

84 Special

• R1

CONTROL MEASURES button

84 Default

•

ENEMY UNITS button

3.68 SHOW PAGE

• R3

FRIENDLY UNITS button

The SHOW page manages the symbology displayed on

• R4

RFI THREATS button

the TSD page during the particular PHASE selected. Like

buttons that are selected/deselected in one PHASE are

• R5

RLWR THREATS button

not automatically selected/deselected in the other

• R6

OBSTACLES button

PHASE. The buttons that are boxed in (fig 3-71) are de-

• B3

ENDR button

faulted to upon power being applied to the display proces-

sor. The moving map is displayed on the SHOW page.

• B5

WIND button

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 2

3-87

TM 1-1520-251-10

a. HSI Button. Selecting the HSI button displays

and friendly units and those control measures that are

the magnetic compass rose on the TSD.

part of the current route, including direct-to navigation.

b. INACTIVE ZONES Button. Selecting the INAC-

h. ENEMY UNITS Button. Selecting the ENEMY

TIVE ZONES button displays the inactive fire zones on

UNITS button displays the enemy unit control measures

the TSD.

on the TSD.

c. AREAS Button. Selecting the AREAS button

i. FRIENDLY UNITS Button. Selecting the

displays the areas on the TSD.

FRIENDLY UNITS button displays the friendly unit control

measures on the TSD.

d. LINES Button. Selecting the LINES button dis-

j. RFI THREATS Button. Selecting the RFI

plays the lines on the TSD.

THREATS button displays the RFI detected threats on the

TSD.

e. WAYPOINT DATA Button. Selecting the WAY-

POINT DATA button displays the next waypoint status

k. RLWR THREATS Button. Selecting the RLWR

window on the TSD.

THREATS button displays the RLWR detected threats on

the TSD.

f. PLANNED TGT/THRT Button. Selecting the

PLANNED TGT/THRT button displays the planned and

l. OBSTACLES Button. Selecting the OB-

stored targets and threats on the TSD.

STACLES button displays the FCR detected obstacles on

the TSD.

NOTE

CONTROL MEASURES that are part of the

m. ENDR Button. Selecting the ENDR button dis-

current route remained displayed even if

plays the endurance/SFR status window on the TSD.

that particular button is deselected.

n. WIND Button. Selecting the WIND button dis-

g. CONTROL MEASURES Button. Selecting the

plays wind direction/velocity on the TSD.

CONTROL MEASURES button displays all of the control

measures except the enemy units and friendly units on the

o. NAVIGATION Status Window. The NAVIGA-

TSD. Deselecting the CONTROL MEASURES button re-

TION status window displays the status of the PHASE

moves all of the control measures except the enemy units

button.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-88

TM 1-1520-251-10

3.68.2 SHOW Page - Attack (ATK) PHASE. The ATK

• R6

TOTAL TARGETS/OBSTACLES

PHASE of the SHOW page (fig 3-72) provides information

button

pertaining to the battle area.

• B4

SHOT button

• B5

WIND button

• B6

HAZARD button

a. HSI Button. Selecting the HSI button displays

the magnetic compass rose on the TSD.

b. INACTIVE ZONES Button. Selecting the INAC-

TIVE ZONES button displays the inactive fire zones on

the TSD.

c. CURRENT ROUTE Button. Selecting the CUR-

RENT ROUTE button displays the current route and all of

its selected points, including direct-to navigation points on

the TSD.

d. TOTAL TGTS/OBSTACLES Button. Selecting

the TOTAL TGTS/OBSTACLES button displays the low

priority FCR targets or obstacles on the TSD.

e. WIND Button. Selecting the WIND button dis-

LBA3021

plays wind direction/velocity on the TSD.

Figure 3-72. SHOW Page - ATK PHASE

f. SHOT Button. Selecting the SHOT button dis-

plays the shot-at X’s on the TSD.

The ATK PHASE of the SHOW page (fig 3-72) contains

g. HAZARD Button. Selecting the HAZARD button

the following unique buttons:

displays all hazard symbols on the TSD

• T1

HSI button

h. ATTACK PHASE Status Window. The ATTACK

• L1

INACTIVE ZONES button

PHASE status window displays the status of the PHASE

• L4

CURRENT ROUTE button

button.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 2

3-89

TM 1-1520-251-10

3.69 SUMMARY OF SYMBOL DISPLAY BY PHASE

The symbology and/or information on the TSD page de-

pends on the state of the PHASE selection as previously

described. The following lists the categories of symbology

displayed at any one time according to the selected

phase. Categories in italics are always displayed within

the respective phase, and have no selection available on

the page.

NAV PHASE

BOTH PHASES

ATK PHASE

CURRENT

LINES

CURRENT

ROUTE (With

Waypoints)

LBA0421A

WAYPOINTS

PLANNED TGT/

TOTAL TGTS/

THRT

OBSTACLES

Figure 3-73. WPT Page

HAZARDS

CONTROL

SHOT

The WPT page contains the following unique buttons:

MEASURES

• L1

POINT button

OBSTACLES

FRIENDLY

UNITS

• L2

ADD button

• L3

DEL button

RFI THREATS

•

EDT button

RLWR

• L5

STO button

THREATS

•

XMIT button

HIGH

3.70.1 POINT Button. Selecting the review POINT but-

PRIORITY FCR

ton arms the KU for entry of the point type (W, H, or C) and

ENDR

the point number. The cursor can also be used to select

the point.

HSI

3.70.2 ADD Button. The WPT ADD button allows the

WIND

creation of a new waypoint, hazard, or control measure

INACTIVE

which is added to the coordinate data files. It displays only

ZONES

when there is an available point in either the waypoint/

hazard or control measure file. Selecting the WPT ADD

button calls up the IDENT button and the Point TYPE but-

tons. The system shall default to selecting the waypoint

3.70 WAYPOINT (WPT) PAGE

WP button if there is at least one slot available in the way-

point/hazard file.

a. Point TYPE Buttons. The point TYPE buttons

are displayed when the WPT ADD button is selected.

The WPT page, (fig 3-73) provides the ability to manage

These buttons are used to select the type of point to be

the waypoints/hazards and control measures files. The

added to the file. Selecting a point TYPE button sets the

WPT page defaults to reviewing the active destination

type of coordinate data according to the respective selec-

point. The crewmember can select any waypoint, hazard,

tion. When the waypoint, hazard, or control measure file is

or control measure for review.

full, the respective point TYPE buttons are not selectable.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-90

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(1) Waypoint (WP) Button. Selecting the WP

a. Delete YES Button. Selecting the Delete YES

button changes the type of the point to be added to way-

button will delete the currently selected waypoint, hazard,

point. The identifier defaults to WP.

or control measure that has been selected by the delete

POINT button.

(2) Hazard (HZ) Button. Selecting the HZ but-

b. Delete NO Button. Selecting the Delete NO but-

ton changes the type of the point to be added to hazard.

ton will cause the system to abort the delete process and

The identifier defaults to a Tower Under 1000 feet TU.

deselect the WPT DEL button.

3.70.4

Waypoint Edit (EDT) Button. Selecting the

(3) Control Measure (CM) Button. Selecting

WPT EDT button calls up the edit FREE button with the

the CM button changes the type of the point to be added

last valid coordinate data selected and the free text of the

to control measure. The identifier defaults to a Check

selected point.

Point CP.

a. Edit FREE Button. The edit FREE button will de-

b. Identifier (IDENT) Button. The IDENT button

fault to the current free text of the selected point.

displays only when the WPT ADD or EDT button is se-

If the defaulted text is not the desired free text, the crew-

lected. The IDENT button value changes to a default val-

member may input the new free text. Once the crew

ue depending on the TYPE button selected. If the de-

selects keyboard ENTER the button label will change to

faulted value is not the desired identifier, the crewmember

UTM LAT/LONG. The crewmember can either accept the

may input another identifier through the KU. Once the

default position of the selected point or enter a different

Keyboard ENTER button has been selected, the button

coordinate through the KU. An example of each is:

label will change to FREE TEXT. The crew can either en-

• 1) UTM: 11SGQ52184911

ter up to 3 characters or default to point type and number,

e.g. W03 for waypoint 03. When the crewmemeber se-

• 2) LAT/LONG: N742594W1205768

lects the Keyboard ENTER button again, the button label

When the crewmember selects the keyboard ENTER but-

will change to UTM LAT/LONG. The crew can either ac-

ton, the button label will change to ALTITUDE. The crew-

cept the default present position of the aircraft or enter a

member can either accept the default altitude of the se-

different coordinate through the KU. An example of each

lected point or enter a different altitude. After the altitude is

is:

edited, the system displays the selected point as modified

• 1) UTM: 11SGQ52184911

in the waypoint review status window and the WPT EDT

button is automatically deselected.

• 2) LAT/LONG: N742594W1205768

3.70.5 Waypoint Store (STO) Button. Selecting the

WPT STO button calls up the NOW button used to store a

Entry convention for LAT/LONG is one contiguous string

waypoint within the coordinate data files using the flyover

with no decimal points in degrees, minutes and hun-

store process. The waypoint review status window dis-

dredths of minutes. Latitude Northing degrees will contain

plays only the waypoint identifier, type, and altitude

two digits; Longitude Easting degrees will contain three

associated with the point file data to be added. The default

digits with leading zeros. 3) Point type and number : C95.

values used are as follows:

4) Pick a point off the map using the cursor (the cursor

coordinate will update in the review status window).]

• Point Type: W

When the crewmember selects the Keyboard ENTER but-

• Point Number: The next lowest number availa-

ton the button label will change to ALTITUDE. The crew-

ble

member can either accept the default aircraft Mean Sea

Level (MSL) altitude or enter a different altitude through

• Point Identifier: WP

the KU. After the altitude is edited, the system displays the

• Free Text: FLY

selected point as modified in the waypoint review status

• Altitude: Present position MSL terrain altitude if

window and the WPT ADD button is automatically dese-

the valid necessary information of ADS and Radar

lected.

Altimeter is available.

3.70.3 The Waypoint Delete (DEL) Button. Selecting

a. NOW Button. The NOW button commands the

the WPT DEL button calls up the delete POINT button

system to add a waypoint using the current aircraft posi-

with the last valid coordinate data selected and the DE-

tion and altitude. The free text will read FLY for waypoints

LETE YES/NO buttons.

stored using the flyover method.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-91

TM 1-1520-251-10

b. TADS LOS Store Procedure. An optional meth-

add or delete points in a route. It provides the ability to

od to store a waypoint using the WPT STO button is to

create direct to routes to selected points.

designate the point to be stored using the TADS laser. The

CPG must sight select TADS and arm the aircraft After se-

lecting the WPT STO button the CPG will point the TADS

laser to the correct location and lase for range and select

the STORE pushbutton on the ORT LHG. This will cause

the system to add a waypoint to the system using the off-

set from the TADS laser range to the aircraft position and

the aircraft altitude. TADS LOS can also store waypoints

using (Auto Range), (Default Range) or (Manual Range).

Waypoints can also be stored using HMD and (Auto

Range), (Default Range) or (Manual Range).

The free text in the WPT status window will reflect the

LOS used to store the target, TAD or HMD.

3.70.6

Waypoint XMIT Button. Selecting the WPT

XMIT button calls up the send POINT button with the last

valid coordinate data selected and the transmit SEND but-

ton used to send a waypoint, hazard, or control measure

over the IDM communication network.

3.70.7 Waypoint Review Status Window. The way-

LBA0872A

point review status window in the lower part of the map-

ping area provides coordinate data pertaining to a se-

Figure 3-74. RTE Page

lected point depending upon the moding of the WPT page.

The data fields displayed within the status window include

the following:

The RTE page also contains the following unique buttons:

• Point Type and Number

• L1

POINT button

• Point Identifier

• L2

ADD button

• L3

DEL button

• Free Text Identifier

• L4

DIR button

• Estimated Time Enroute (ETE)

•

RVW button

• Estimated Time of Arrival (ETA)

• L6

RTM button

• Spheroid

• R1

Route Scroll Up button

• Datum

• R2 - R5 Route POINT buttons

• R6

Route Scroll Down button

• UTM Coordinates

3.71.1 POINT Button. Select the POINT button and

• Bearing

enter the point to be added using the KU or the cursor

• Distance to Go (Km)

control to select the point to be added from the map dis-

play. Next, select the point in the route window which the

• Latitude/Longitude Coordinates

selected point is to be inserted (in front of). The system

• Altitude

modifies the route to include the selected point.

• Distance to Go (NM)

3.71.2 ADD Button. Selecting the ADD button allows

the crew to add existing waypoints, hazards, and control

3.71 ROUTE (RTE) PAGE

measures to the current route. The system does not per-

mit adding a target or threat to the route. To add a point to

The RTE page (fig. 3-74) allows the crewmember to ac-

the route, first select the ADD button, and the system calls

cess current route information, select a new route, and

up the POINT button.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-92

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3.71.3 Delete (DEL) Button. Selecting the DEL button

3.71.8 Route POINT Buttons. The route POINT num-

allows the crew to delete an existing waypoint, hazard, or

ber buttons provide the ability to review, add, delete, or

control measure from the current route. To delete a point

perform a direct route to a point in the current route. The

from the route, first select the DEL button. Next, select the

point label which represents the active destination is un-

Route Point Number button which lists the point for dele-

derlined. The route number option buttons act as momen-

tion. The system modifies the route to exclude the se-

tary buttons when adding, deleting or performing a direct-

lected point.

to to a point in the current route.

NOTE

3.71.9 Route Window. The route window provides a

status window which displays the next four waypoints,

The Next Waypoint Status Window will re-

hazards, or control measures in the current route. The

flect the point selected as ”DIRECT TO”.

route name displays within the bracket along the left side

of the window.

3.71.4 Direct (DIR) Button. Selecting the DIR button

allows the crew to select an existing waypoint, hazard, or

3.71.10 RTE Review Status Window. The RTE review

control measure as the point to which a direct route will be

status window in the lower area of the map provides the

created.

ability to review coordinate point data for points in the cur-

rent route. This window displays only when the RVW but-

NOTE

ton is selected and a Route button is selected. The data

fields of the route review status window include the follow-

When either a direct-to inside the route or

ing:

outside the route is created, the route line

will go partial intensity, and the direct-to

• Point type and number

route line will be shown in full intensity.

• Point identifier

a. Direct To In The Route. To create a direct route

• Free text identifier

to a point, first select the DIR button and the system

makes the Route Point buttons available for selection.

• Estimated Time Enroute (ETE) based on position

Next, select the point in the route window at which the di-

of the aircraft in the route

rect-to route is to be created.

•

Estimated Time of Arrival (ETA) based on position

of the aircraft in the route

b. Direct To Outside The Route. To create a direct

route to a point, outside the route, first select the DIR but-

• Distance to go along the route (KM)

ton. The system calls up the POINT button. Select the

• Distance to go along the route (NM)

POINT button and enter the point to which a direct route

will be created using the KU, or use the cursor control to

select the point to which a direct route will be created from

the map display.

CAUTION

3.71.5

Route Review (RVW) Button. Selecting the

The Next Waypoint Status Window will

RVW button allows the crew to select a waypoint, hazard,

reflect the first point in the selected

or control measure for review using the route point but-

route. To enter route from other than the

tons displayed in the RTE review status window. Selecting

start point, perform a ”DIR TO” to the ap-

the RVW button causes the route point buttons to be ac-

propriate waypoint to ensure the Next

tive for selection. Selecting one of the route point buttons

Waypoint Status Window is valid.

causes the RTE review status window to be displayed.

3.72

ROUTE MENU (RTM) PAGE

3.71.6 Route Menu (RTM) Button. The RTM button al-

lows access to the Route Menu page.

The RTM page (fig 3-75) allows the crewmember to re-

view stored route information, select a route for naviga-

3.71.7 Route Scroll UP/DOWN Buttons. Selecting the

tion, or delete a stored route. Two pages display a total of

route scroll buttons causes the points within the route to

ten stored routes. The NEW route button defaults to se-

shift in order to display points along the route.

lected upon display of the page.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-93

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Once the RTE DELETE button is selected, selecting one

of the route name buttons calls up the delete route YES

and NO buttons.

a. RTE Delete YES Button. Selecting the delete

route YES button will cause the system to delete all the

points from the selected route. The coordinate data of the

points will remain in memory.

b. RTE Delete NO Button. Selecting the delete

route NO button will cause the system to abort the delete

route process.

3.72.4

REVERSE ROUTE Button. The REVERSE

ROUTE button allows the crewmember to reverse the

waypoint order in the current route. If the active point in

the current route is the first point, the new active point will

be set to the last point. If the active point is not the first, the

new active point will be set to the previous point. If a di-

rect - to point is the active point, the active point will not be

LBA0887A

changed.

Figure 3-75. ROUTE MENU (RTM) Page

3.72.5 Route Status Windows. A route window is dis-

played for each of the five routes presented on RTM page

1 or 2 to indicate the first 6 points within each route and

The RTM page contains the following unique buttons:

the route selected as the current route. A route window

• T1 - T5

Route name buttons

displays just below its associated route name button in the

upper area of the format. In addition, the CURRENT label

• L4

RTE NEW button

displays just above the route window which is selected as

• L5

RTE DELETE button

the current active route for navigation.

• R5

REVERSE ROUTE button

3.73 THREAT (THRT) PAGE

3.72.1 Route Name Buttons. The Route Name but-

tons provide the ability to select a particular route to be the

The THRT page (fig 3-76) provides the ability to review

current route for navigation or to be deleted from the route

selected target/threat information and add, delete, edit,

file. The CURRENT label is displayed just above the se-

store, or send target and threat data. Selecting the THRT

lected route window. Route name can only be entered

page button calls up the threat page in the review mode.

through the AMPS.

The selections made from the THRT page are identical to

the selections made on the WPT page with a few excep-

3.72.2 RTE NEW Button. Selecting the RTE NEW but-

tions. When adding a target/threat the crew must select a

ton allows the crewmember to designate a route as the

type of the point to be added, however, TG is the default.

new current route for navigation.

It will always be added as a target. When performing a tar-

get store the default value for the point type will be TG. In

3.72.3 RTE DELETE Button. The RTE DELETE but-

addition, whenever the KU is used and the point type is to

ton allows the crewmember to permanently delete a route.

be entered, a T will be used instead of the W, H or C.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-94

TM 1-1520-251-10

LBA1929A

LBA2546A

Figure 3-77. COORD Page

• T1

WPTHZ button

• T2

CTRLM button

Figure 3-76. THREAT (THRT) Page

•

LINE button

• T4

AREA button

• T6

SHOT button

3.74 COORDINATE (COORD) PAGE

• L1 -L6

Acquisition Selection buttons

• R1 - R6 Point Expansion buttons

• B4

Search (SRCH) button

The target/threat COORD page (fig 3-77) provides access

to coordinate file data. The COORD page contains the

• B5

FARM button

complete coordinate data file of stored targets and

3.74.1

Waypoint/Hazard

(WPTHZ) Page But-

threats. The COORD page also provides the ability to se-

ton. Selection of the WPTHZ button will cause the way-

lect a target or threat as the acquisition option or to ex-

point/hazard page to be displayed.

pand the display of detailed target or threat information for

review. The system shall initialize to the first page unless

3.74.2

Control Measures

(CTRLM) Page But-

the current acquisition source (T##) is a target or threat.

ton. Selection of the CTRLM button will cause the con-

This file is capable of storing up to 50 targets or threats on

trol measures page to be displayed.

ten display pages of six points per page. If the crew at-

tempts to add or store more than 50 targets or threats, the

3.74.3 LINE Page Button. Selection of the LINE button

system overwrites the target or threat starting one location

will cause the LINE page to be displayed.

past the end of the target and threat safe set. The target

3.74.4 AREA Page Button. Selection of the AREA but-

and threat file has up to 25 locations protected from over-

ton will cause the AREA page to be displayed.

writing referred to as the safe set. The SP protects all tar-

gets, up to 25, that are loaded from the DTC. The crew

3.74.5 Shot-At (SHOT) Page Button. Selection of the

can edit these protected files, but they will not be overwrit-

SHOT button will cause the Shot-At page to be displayed.

ten. The SP will only use these protected locations for

storing if the target or threat that was initially loaded in that

3.74.6 Target/Threat Coordinate Acquisition Selec-

location has previously been deleted. See paragraph

tion Buttons. The COORD acquisition select buttons

3.62.6 for additional information regarding the addition of

rapidly select a target or threat from the file as an acquisi-

a new target (T51), the ATHS TARGET.

tion source.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-95

TM 1-1520-251-10

3.74.7

Target/Threat Coordinate Expansion But-

first page unless the current acquisition source (T##) is a

tons.

Selection of the COORD expansion buttons ex-

waypoint or hazard.

pands the single line of target or threat information into

three lines of information. The single line of target or threat

information contains the following:

• Target/Threat type and number

• Target/Threat identifier

• Free text identifier

• Spheroid

• Datum

• UTM coordinates

• MSL elevation

The expanded three lines of information contain the fol-

lowing additional information:

• Estimated Time Enroute (ETE)

• Estimated Time of Arrival (ETA)

• Bearing

LBA1930A

• Distance to go (Km)

Figure 3-78. WAYPOINTS and HAZARDS Page

• Latitude/Longitude coordinates

The selections made from the WPTHZ page are identical

• Distance to go (NM)

to the selections made on the COORD page except that

when selecting an acquisition select button, the acquisi-

When an expansion button is selected it will automatically

tion source will change to a waypoint or hazard instead of

deselect any other previously selected expansion button.

a target or threat.

3.74.8 Target/Threat Coordinate Search (SRCH) But-

3.76 CONTROL MEASURE (CTRLM) PAGE

ton. The target/threat coordinate SRCH button provides

the ability to rapidly search within the target/threat coordi-

The CTRLM page (fig 3-79) accesses the coordinate file

nate data file.

data of control measures. The CTRLM page allows for the

selection of a control measure as the acquisition option or

3.74.9 Fuel, Ammo, Rockets, and Missiles (FARM)

to expand the display of detailed control measure informa-

Button. Selecting the FARM button displays the FARM

tion for review. The control measure file is made up of 49

page. See paragraph 3.80.

points instead of 50 points like the target/threat and way-

point/hazard files. The system initializes to the first page

3.75 WAYPOINT/HAZARD (WPTHZ) PAGE

unless the current acquisition source (T##) is a control

measure. The selections made from the CTRLM page are

The WPTHZ page (fig 3-78) accesses the coordinate file

identical to the selections made on the COORD page ex-

data of waypoints and hazards. The WPTHZ page allows

cept for the following: When selecting acquisition select

for the selection of a waypoint or hazard as the acquisition

button, the acquisition source will change to a control

option or to expand the display of detailed waypoint or

measure instead of a target or threat. The SRCH button

hazard information for review. The system initializes to the

has a valid range of 51 to 99.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-96

TM 1-1520-251-10

LBA5226

LBA5227

Figure 3-80. LINE Page

The list includes the following information:

Figure 3-79. CONTROL MEASURES Page

• Line file number

• Line identifier

• UTM coordinate for each point

• MSL altitude for each point

3.77 LINE PAGE

3.78 AREA PAGE

The AREA page shown in (fig 3-81) provides the ability to

The LINE page (fig 3-80) provides the ability to view the

view the coordinates associated with each of the 12 (max-

imum) areas stored in the navigation data base. The sys-

coordinates associated with each of the 15 (maximum)

tem initializes to the first page. The AREA page is identi-

boundary and phase lines stored in the navigation data

cal to the LINE page such that the page is for viewing only.

base. The system initializes to the first page. The LINE

One difference between the lines and areas is that each

data display area lists the data stored for each line in the

area must be made up of four points. The AREA data dis-

file. Each line may consist of between two and four points.

play area lists the data stored for each area in the file.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-97

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LBA5228

LBA5229

Figure 3-81. AREA Page

Figure 3-82. SHOT Page

The list includes all four points defining the area and in-

The SHOT page contains the following unique buttons:

cludes the following information:

• AREA file number

• L3

DEL button

• AREA identifier

3.79.1 Delete (DEL) Button. The DEL buttons allows

the crew to delete all shot-at location coordinate points

• Spheroid

received from other aircraft. Selecting the DEL button

• Datum

calls up the Delete Shot YES and Delete Shot NO buttons.

• UTM coordinate for each point

3.79.2 SHOT-AT Data Display Area. The SHOT-AT

• MSL altitude for each point

data display area lists the data stored for each shot-at in

the file. The display area includes the following informa-

3.79 SHOT PAGE

tion:

The SHOT page, shown in (fig 3-82) accesses the coordi-

• Shot-at file number

nate file data of shot-at locations stored in the navigation

• Target symbol

data base. This file is capable of storing up to 128 shot-at

locations on 26 display pages of 6 points per page. The

• Missile type

file is split into 2 parts. The first 16 locations are reserved

• Zulu Time of trigger pull

for targets shot-at by the ownship. The last 112 locations

are reserved for targets shot-at by other aircraft. If more

• OWN or IDM indication

that 16 targets are shot-at by the ownship, the system will

overwrite shot-at locations beginning with the first position

• Spheroid

in the file. If more than 112 shot-at locations are added to

• Datum

the file, the system will overwrite the shot-at locations be-

ginning with the 17th position in the file.

• UTM coordinate of Shot-at (para 3.62.16)

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-98

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3.80 FUEL, AMMO, ROCKETS, AND MISSILES

(FARM) PAGE

The FARM page (fig 3-83) allows the crew to quickly re-

view FARM reports. Selecting the FARM button will dis-

play data from the last seven received FARM reports.

However, if a FARM report is received and the call sign

matches a FARM report currently in the system, the

FARM report will be overwritten. If a FARM report is re-

ceived and the call sign does not match an existing FARM

report it will be written to the next available location. If a

location is not available, the oldest FARM report will be

overwritten.

The TYPE button allows the crew to determine what type

of FARM report data is displayed PP, EXPEN, MSL or BA-

SIC. The reports are sorted from the newest to oldest

based on date/time (then by call sign).

LBA5007

Figure 3-84. BASIC FARM Data

b. PP Button (R4). Displays present position and

altitude information (fig 3-85) .

LBA5006

Figure 3-83. FARM Page

NOTE

If data is invalid or no launchers are present,

LBA5008

“NA” will be displayed in the appropriate col-

umn on the page.

Figure 3-85. PP FARM Data

a. BASIC Button. Displays basic FARM data (fig

3-84). The SAL column on this page displays the sum of

c. EXPEN Button. Displays all ASE Expendables

SAL1 and SAL2 missiles.

(fig 3-86).

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-99

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LBA5009

LBA5010

Figure 3-87. MSL FARM Data

Figure 3-86. EXPEN FARM Data

3.81 ZONE (ZN) PAGE

d. MSL Button. Displays specific Hellfire missile

The ZN page ( fig 3-88, or fig 3-89) may be displayed in

counts (fig 3-87). “Other” is the difference between the to-

the NAV or ATTACK phases. Selecting the ZN page will

tal missile count and sum of the RF, SAL1, and SAL2

freeze the TSD. The ZN page provides the ability to

counts.

construct and assign priority fire and no fire zones for the

battle management mission segment. A maximum of 8

priority fire zones and 8 no fire zones can be displayed on

the TSD. A maximum of 1 priority fire zone and up to 8 no

fire zones may be active at any time. Active PFZ and

NFZ’s will marquee to aid the crew in determining which of

the zones are active. The active priority fire and no fire

zones affect the prioritization on the next scan after the

zone has been created, received, or reassigned. FCR tar-

gets detected within an active priority fire zone out-priori-

tize the FCR targets which fall outside the zone. FCR tar-

gets detected within the active no fire zones are not

prioritized. Active PF and NF zones will marquee on the

TSD and FCR pages.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-100

TM 1-1520-251-10

3.81.2 TYPE Button. The TYPE button allows the crew

3.81.5 Manual (MAN) Button. Selection of the MAN

to toggle between Priority Fire (PF) and No Fire (NF) zone

button enables the cursor to select points for each zone

controls (fig 3-91).

that will be created based on the current setting of the #Z

button. When the crew has selected the first point the CLR

button will be displayed. When the crew has selected the

last point of the last priority fire zone, the ASN and SEND

buttons will be displayed.

3.81.6 Number (#Z) Button. Selecting the #Z

(1 - 8) button allows the crew to select the number of zones

to be created. The number of the zones to be created de-

faults to the number of team members that are also zone

designated plus one for the ownship.

3.81.7 Draw (DR) Button. Selecting the MAN or AUTO

button calls up the DR button, which toggles between BX

(box) and LN (line) modes of the cursor operation. The

box mode allows the crew to select the lower left and up-

per right corners of a box for PF zone construction. The

LN mode allows the operator a quadrilateral polygon for a

PF zone. Using the LN method to draw PFZ, the zones

will be oriented parallel to the first line drawn.

LBA3022

3.81.8 Target Reference Point (TRP) Button. Selec-

tion of the TRP button removes all of the existing priority

Figure 3-91. ZN (Zone) Page, Type PF

fire zones from the MPD on which the TRP button is se-

lected. The crew selects the TRP button to create priority

fire zones using the target reference point method. Selec-

3.81.3 Option (OPT) Button. The OPT button is dis-

tion of the TRP button enables the cursor to select a point

played when the TYPE is PF, and allows the crew to select

on the map as the center of the priority fire zones to

the AUTO, MAN or TRP drawing method. AUTO is the de-

create. The size of the zones is based on the setting of the

fault.

kilometer K button. When the crew has selected the refer-

ence point, the ASN, CLR and SEND buttons will be dis-

3.81.4

Automatic (AUTO) Button. Selection of the

played.

AUTO button enables the cursor control to select four

points which connect to form a quadrilateral polygon

which encompasses the FCR targets. Selecting the fourth

a. Kilometer (KM) Button. The KM (kilometer) but-

corner of the polygon divides the polygon into a number of

ton displays when the TRP button is selected. Selecting

priority fire zones 1 - 8, as determined by the current value

the KM (kilometer) button allows the crew to select the

of #Z button. When the crew has selected the first point

size (1 - 3 km) of the TRP priority fire zones. The zone size

the CLR button will be displayed. When the crew has se-

is measured in terms of the length of one side of the

lected the last point, the ASN and SEND buttons will be

square box for each of the four zones. The default size is

displayed.

2 km.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-102

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3.81.9 SELECT (SEL) Button. When the TYPE is NF,

NOTE

the SEL button allows the crew to select the NF zone to

• Instead of selecting the ACT or ACCEPT

modify (fig 3-92). Each active NFZ is indicated by a left

buttons, the crew may begin drawing the

pointing arrow. Empty zones (undrawn) are WHITE with a

next no fire zone and the previously

question mark next to the number.

drawn zone will automatically be ac-

cepted.

• The DP will keep track of all the active no

fire zones and the single active no fire

zone when the ACTIVE button is set to

MULTI for backwards compatability. This

will allow the receiving DP to use the ap-

propriate data, either multiple active no

fire zones or a single active no fire zone

based on the receiving aircrafts current

capability.

• Both the DP and the FCR will automati-

cally configure to the capability of the

other. This will allow an FCR with single

active no fire zone capability to be

installed with a DP with multiple active no

fire zone capability or vice - versa with no

impacts other than the functional differ-

ences between multiple and single active

no fire zone.

3.81.10 Active (ACT) Button. The ACT button allows

LBA3049

the selection of a new active priority fire zone or new ac-

tive no fire zone. The system displays the ACT button only

Figure

3-92.

NF SEL Button Selected

when priority fire zones are loaded into the system. or

when no fire zones are loaded into the system or are fin-

ished being drawn. When the ACTIVE button is set to

MULTI, each no fire zone can be individually activated or

deactivated using the ACT button. When a no fire zone is

being deactivated and it is the current single active no fire

zone, the first no fire zone that is found to be active start-

ing from NFZ1 will be selected as the single active no fire

zone for the IDM transmission.

3.81.11 Accept (ACCEPT) Button. The ACCEPT but-

ton allows the crew to accept a NFZ permanently if all the

points for the new NFZ have been entered.

3.81.12 DELETE (DEL) Button. The DEL button al-

lows the crew to delete all Priority Fire zones or each No

Fire zone indvidually. Crew has YES/NO option.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-103

TM 1-1520-251-10

NOTE

3.81.19 Priority Fire Zones. A maximum of 8 priority

fire zones can be created/displayed on TSD. Only the ac-

Although the IDM messages will support

tive priority fire zone is displayed full intensity in WHITE.

sending data between differently configured

The inactive priority fire zones are displayed partial inten-

aircraft (i.e., some single active no fire zone

sity. The label for the active zone will be removed to allow

and some multiple active no fire zones) it is

the crew to easily identify the highest priority targets. The

advised that aircraft communicating be set

Active priority fire zone will be displayed in both GTM and

to the same active mode (if possible) to

ATM mode on the FCR Page.

avoid data being ignored due to different

modes of operation.

3.81.20 No Fire Zones. Eight no fire zones can be

created/displayed on TSD. No fire zones are displayed in

3.81.13 ACTIVE (ACTIVE) Button. When the TYPE is

full intensity in YELLOW. The active no fire zones will mar-

NF, the ACTIVE button allows the crew to switch between

quee on the TSD and FCR pages.

MULTI(ple) and SINGLE mode. When in MULTI active

mode, more than one no fire zone can be active at the

3.82 REPORT (RPT) PAGE

same time. When in SINGLE active mode, only one no fire

zone can be active at one time. If another no fire zone is

The RPT page (fig 3-93) provides the ability to send re-

active at the time a no fire zone is activated, it will auto-

ports using the IDM to network zone members, or to query

matically be deactivated. When the FCR is powered on,

those members for the indicated report. The RPT page

the ACTIVE button will be barriered and the DP will auto-

contains the following buttons:

matically mode to either MULTI or SINGLE based on the

capability of the FCR.

3.81.14 Subscriber Identifier Buttons. To assign indi-

vidual priority fire zones to each subscriber, the crew will

select the subscriber buttons in the desired sequence. In

turn, the system assigns PF1 to the first subscriber se-

lected, PF2 to the second subscriber selected, and so

forth, until all assignments are completed. The crew may

also deselect the subscriber identifier buttons to remove

the subscriber from the selected priority fire zone.

3.81.15 SEND Button Selecting the SEND button trans-

mits the priority fire zones to the selected zone members

on the IDM net. The SEND button will be displayed when

the last point of the priority fire zones or no fire zone,being

created has been entered. The XMIT BOTH button will

determine if both the PF and NF zones are transmitted or

only the current type of zone determined by the TYPE but-

ton are transmitted.

LBA0949B

3.81.16 Clear (CLR) Button. The CLR button clears

the last cursor entry for the polygon in progress. Subse-

Figure 3-93.

RPT Page

quent selections will remove the next to last cursor entry

and so on.

• T1

RPT button

3.81.17

XMIT BOTH Button. Selecting the XMIT

• L1

BDA button

BOTH button allows the crew to select/deselect sending

• L2

TGT button

both PF and NF zones when SEND is selected.

• L3

PP button

3.81.18 OWN Button. The crew selects the OWN but-

• L4

FARM button

ton to assign the selected priority fire zone to the ownship.

• T5 - T - 6, R1 - R5 Subscriber buttons

The system displays the word OWN in the center of the

priority fire zone assigned to the ownship.

• B2

REPLY/MSG button

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-104

TM 1-1520-251-10

3.82.1 Battle Damage Assessment Report (BDA) But-

individual FCR target that the system will transmit out

ton. Selecting the BDA button calls up the ALL and

when the crew selects the SEND button.

OWN buttons. The OWN button is default selected.

3.82.3 Present Position (PP) Report Button. Select-

a. ALL BDA Button. Selecting the ALL button

ing the PP button commands the system to transmit out

instructs the system to transmit all of the BDA reports

the aircraft present position when the crew selects the

when the crew selects the SEND button.

SEND button.

b. OWN BDA Button. Selecting the OWN button

3.82.4

Fuel, Ammo, Rockets, and Missles (FARM)

instructs the system to transmit BDA reports for the own-

Button. Selecting the FARM button commands the sys-

ship when the crew selects the SEND button.

tem to display the FARM REPORT page.

NOTE

• If a system is turned off the message will

indicate its information is not available.

• If the aircraft is in simulation mode, the

simulated inventory will be sent.

• If the aircraft is configured for TESS and

has detected any live ordinance the gun

quantity present, rocket launcher pres-

ent, and HELLFIRE launcher present will

indicate not present in the message. The

message will indicate the gun, rocket,

and HELLFIRE quantities are not avail-

able.

• If equipment failure occurs (or hang fires)

those quantities will not be included in the

message.

a. The following data will be transmitted to all selected

LBA5011

subscribers when the crew selects the SEND button. No

addtional operator input is required.

Figure 3-94. Page Layout When BDA Is Selected

• Call Sign (5 characters)

• Date (month, day, and year)

3.82.2 Report FCR Targets (TGT) Button. Selecting

the TGT button calls up the ALL and PRI (Priority) but-

• Present Position (Lat/Long)

tons, and enables the cursor to select individual FCR tar-

• Elevation (feet)

get(s).

• Fuel Quantity (Lbs)

a. ALL FCR Targets Button. Selecting the ALL

• Gun rounds present and quantity

button instructs the system to transmit out all of the FCR

targets (high and low priority) when the crew selects the

• Rockets (launcher present and quantity)

SEND button.

• Hellfire missles (quantity of SAL 1, SAL 2, and RF)

b. Priority (PRI) FCR Targets Button. Selecting

• Quantity of all ASE Expendables

the PRI button instructs the system to transmit out all of

the high-priority FCR targets when the crew selects the

3.82.5 Subscriber Buttons. Are used to select sub-

SEND button.

scriber to receive transmission. The default for the TGT,

PP and FARM messages is all of the subscribers selec-

c. Selecting Individual FCR Targets. If neither the

ted. The default for the BDA message is none of the sub-

ALL nor the PRI button is selected, the crew can select an

scribers selected.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-105

TM 1-1520-251-10

3.83 INITIALIZATION

3.84 NORMAL OPERATIONS

The following paragraphs describe procedural steps re-

The Navigation subsystem initializes automatically upon

quired for interface with the navigation subsystem via the

aircraft power application. The present position will be au-

TSD, and the systems response to crewmembers input.

tomatically loaded by the SP. If a present position does not

exist, the crew can enter in the present position using the

3.84.1 Add a Waypoint, Hazard, Control Measure.

position update procedure (para 3.83.1). Should power be

interrupted, the system stores the last known aircraft posi-

TSD page - Select.

tion. Upon application of power, the system initiates an

alignment as follows:

WPT page - Select.

• Starts EGI alignment

ADD button - Select.

• Reads the last stored present position

TYPE button - Select Waypoint (WP), Hazard

• Sets the Doppler Radar to ON

(HZ), or Control Measure (CM).

• Sets the map scale to 1:250K

IDENT button - Enter Point identification on KU

• Reads all stored routes from memory and the

or accept default.

DTC.

Free Text - Enter.

• Reads all waypoint, hazard, control measure,

target, threat, line and area data

UTM or LAT/LONG coordinates - Enter.

• Sets the map and ownship symbol to the de-cen-

Altitude - Enter or accept default.

tered position

• Sets TSD Map Frozen Cue

ADD button - Select.

10.

POINT button - Select.

3.83.1 Perform a Fly-over or TADS LOS Position Up-

date.

a. Enter point type and number on the KU.

TSD page - Select.

b. Select the point in the route window which

the added point is inserted in front of.

PSN button - Select.

3.84.2 Add a Target or Threat.

POSITION button - Select.

1. TSD page - Select.

a. Enter new position in either UTM or LAT/

2. THRT page - Select.

LONG coordinates using the KU.

3. ADD button - Select.

b. Fly over the new position.

4. IDENT button - Enter Point identification on KU

or accept default.

UPT button - Select.

5. Free Text - Enter.

6. UTM or LAT/LONG coordinates - Enter.

RHG Sight Select switch - TADS.

7. Altitude - Enter or accept default.

RHG LRFD trigger - Press.

3.84.3 Store a Waypoint.

LHG STORE/UPDT switch - UPDT.

1. WPT page - Select.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-106

Change 3

TM 1-1520-251-10

2. STO button - Select. Fly to point location.

a. TADS: Laser, Auto, Manual, or Default.

3. NOW button - Select.

b. HMD: Auto, Manual, or Default.

3.84.4 Add Existing Points to the Current Route.

4. Store button - Press.

TSD page - Select.

3.84.6 Create Priority Fire Zones.

RTE page - Select.

TSD page - Select.

ADD button - Select.

ZN page - Select.

a. Cursor Method:

Select AUTO Button for AUTO method of Prior-

ity Fire Zone creation, accept, or modify the #Z

(1) Select point using cursor.

button.

(2) Select the point in the route window

which the added point is inserted in front

a. Accept default Draw (DR) Box (BX) method

of.

or select DR Line (LN) button.

b. Select the corners of the Priority Fire Zone

using the cursor and enter function.

b. KU Method:

c. ASN button - Select.

(1) Enter point type, identification and num-

ber.

d. Select the desired subscriber button(s) to

assign the number of zones selected above.

(2) Select the point in the route window

which the added point is inserted in front

of.

Select MAN zoning button and accept or modify

3.84.5 Store a Target or Threat.

the #Z button.

1. TSD page - Select.

e. Accept default Draw (DR) Box (BX) method

or select DR Line (LN) button.

2. THRT page - Select.

f. Draw one to six priority fire zones using the

3. STO button - Select.

cursor and enter function in the box or line

mode. The number of zones to draw is

a. Option 1: Fly-over

based on the #Z button.

1. Fly to target or threat location.

g. ASN button - Select

2. NOW button - Select.

h. Select the desired subscriber description

button(s) to assign that PF zone as the ac-

b. Option 2: TADS/HMD LOS Method.

tive (full intensity) PF zone in the subscriber

aircraft.

1. Sight Select (CPG) - TADS or HMD.

2. Place selected sight on target.

3. Provide desired Range source:

TRP zoning button - Select.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 3

3-107

TM 1-1520-251-10

4. KM button - Accept or modify.

11. SEND button - Select.

a. Select desired point on the map display us-

3.84.8 Request BDA Reports or PP Reports.

ing the cursor and enter function.

1. TSD page - Select.

b. ASN button - Select

2. RPT page - Select.

c. Select subscriber description button(s) to

assign that PF zone as the active (full inten-

3. BDA - Select.

sity) PF zone in the subscriber aircraft.

4. MSG button - RQST.

3.84.7

Send BDA Reports (ALL or OWN), or TGT

Reports (Selective, ALL, PRI) or PP Reports.

5. Subscriber - Select as appropriate.

1. TSD page - Select.

6. SEND button - Select.

2. RPT page - Select.

3. BDA - Select.

PP - Select.

4. Either ALL or OWN - Select.

7. MSG button - RQST.

5. Subscriber - Select as appropriate.

8. Subscriber - Deselect as appropriate.

6. SEND button - Select.

9. SEND button - Select.

3.84.9 Add a New NF Zone.

TGT - Select.

1. TSD page - Select.

7. Select ALL or PRI or use cursor.

2. ZN page - Select.

8. Subscriber - Select as appropriate.

3. NF button - Select.

9. SEND button - Select.

4. DR button - Select LN or BX.

a. Select four corners of a quadrilateral poly-

gon (or two corners of the box rectangle) us-

PP - Select.

ing the cursor.

10. Subscriber - Select as appropriate.

5. OWN or SEND - Select.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3-108

TM 1-1520-251-10

CHAPTER 3A

BLK 2

AVIONICS

Section I.

GENERAL

3A.1 DESCRIPTION

degrees from the nose. Reception is

achieved up to a range of 22 NM except

Avionics equipment includes communication equipment

with frequencies above 145 MHz where

and navigation equipment. This chapter describes each

the direction degradation is severe.

major item with respective locations on the airframe and

antenna locations.

• The UHF-AM (ARC-164) radio provides

the second best overall performance. Two

3A.2 AVIONICS EQUIPMENT CONFIGURATION

line-of-sight blockages occur with the UHF

radio that completely block reception and

Communication/Navigation equipment configurations are

transmission due to pylon-mounted weap-

shown in Table 3A-1. Communication/Navigation antenna

ons. These blockages are in 25-degree di-

locations are shown in Figure 3A-1.

rectional arcs, from 012 to 037 degrees and

3A.3 AVIONICS POWER SUPPLY

from 323 to 348 degrees from the nose. A

slight range and audibility degradation oc-

curs around the tail directions from 120 to

CAUTION

240 degrees from the nose. Although trans-

missions are clear, the maximum reception

Uncommanded FM transmissions may occur

range for UHF is approximately 30 NM be-

during IDM IBIT, FALLBACK, when the CIU

low 300 MHz and approximately 35 NM

circuit breaker is open, or during CIU power-

above 300 MHz. Communications in com-

up. CIU power-up occurs during aircraft pow-

bat operations and with ATC should take

er-up and upon CIU circuit breaker reset.

these factors into consideration.

Power to operate all of the avionics communication equip-

• The FM-1 radio transmits clearly and pro-

ment is provided by the emergency dc bus. This allows back-

vides the third best overall performance. A

up battery power to be used in case of an aircraft electrical

slight range and audibility degradation oc-

failure. External power may also be applied. See Chapter 2,

curs at the low and high band of frequen-

Section XI for more information on electrical power supply.

cies in directions from 120 to 210 degrees

NOTE

from the nose. Reception is achieved up to

a maximum range of 29 NM for plain and

• Testing of the aircraft has shown that

22 NM for cipher text mode. The exception

there may be significant self - generated

is near 40 and 80 MHz where reception is

interference [HF missile launchers, Dop-

achieved to a maximum range of 23 and

pler Navigation System (DNS) antennae,

16.5 NM respectively. Non-line-of-sight re-

MPDs, etc.] and local conditions (radio,

ception is expected to be nonexistent.

television stations, public transmitters)

that affect aircraft communications re-

• The FM - 2 radio can transmit clearly at

ceivers. Reception ranges may be signifi-

slightly reduced ranges. A severe recep-

cantly reduced, whereas, transmission

tion range and audibility degradation oc-

capability is normally unaffected.

curs on most frequencies compared to

• The VHF-AM (ARC-186) radio can

the FM-1. The maximum line-of-sight

transmit clearly. A slight range and audi-

reception range is 22 NM, except for fre-

bility degradation occurs at the high band

quencies of 32, 40 and 80 MHz that can

frequencies in directions from 0 to 120

be as low as 13 NM.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 3

3A-1

TM 1-1520-251-10

Table 3A-1. Communication/Navigation Equipment

Control

Equipment

Nomenclature

Use

Range

Location

Remarks

Inter -

Communication

Inter-

Within crew

Pilot right

Pilot volume controls RH

communication

Control Panel

communication

stations

console and

wing volume, CPG

(COMM)

between crew

and two

CPG right

volume controls LH wing

members, wing

external

console

volume.

station

receptacles

communications

located on

and volume control. the wing

tips.

VHF-AM

Radio set

Two-way voice

Line of

MPD, EUFD,

Communication

RT-1300B/

communications

sight

and COMM

ARC-186(V)

VHF-AM frequency

panel

VHF

range 116 to

151.975 MHz.

Receives only

frequency range

108 to 115.975

MHz.

UHF-AM

Radio set

Two-way voice

Line of

MPD, EUFD,

Provides the capability to

Communication

RT-1145F/

communication

sight

and COMM

monitor the guard

ARC-164(V)

UHF-AM frequency

panel

frequency while receiving

UHF (HAVE

range of 225 to

and transmitting on any

QUICK)

399.975 MHz.

frequency other than 243

Radio set

Contains a

MHz. Provides the

RT-1614 (HQ2)

separate dedicated

capability for frequency

guard receiver

hopping (FH) and secure

fixed-tuned to 243

communications.

MHz.

VHF-FM

Radio set

Two-way voice

Line of

MPD, EUFD,

Provides the capability for

Communication

RT-1478D/

communication

sight

and COMM

FH and secure

ARC-201D VHF

VHF-FM in the

panel

communications.

Single Channel

frequency range of

Ground and

30 to 87.975 MHz.

Airborne Radio

Set

(SINCGARS)

Radio set

Two-way voice

Non - Line

MPD, EUFD,

Provides the capability for

Communication

ARC-220 HF

communication HF

of sight

and COMM

non - line of sight

in the frequency

panel

communications.

range of

2.0000 to 29.9999

MHz.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3A-2

Change 3

TM 1-1520-251-10

Table 3A-1.

Communication/Navigation Equipment - continued

Control

Equipment

Nomenclature

Use

Range

Location

Remarks

Voice Security

TSEC/KY-58

Secures

Not

MPD, EUFD,

The COMSEC subsystem

System

(CIPHER

communication for

applicable

and

provides control of the

DEVICE)

UHF radio.

EMERGENCY

TSEC/KY-58 from both

panel.

crew stations. It has the

capability to store up to 6

Crypto Net Variables.

Voice/Data

TSEC/KY-100

Secures

Not

MPD and

The COMSEC subsystem

Security System

(CIPHER

communication for

applicable

EUFD,

provides control of the

DEVICE)

HF radio.

TSEC/KY-100 from both

crew stations. It has the

capability to store up to 6

Crypto Net Variables.

FM amplifier

Improved FM

Varies power

Not

MPD

Is a variable power

(IFM)

output of FM1.

applicable

amplifier capable of

providing RF output at

four power levels.

Transponder set

RT-1836/

Transmits a reply

Line of

MPD, EUFD,

Includes mode S growth

APX-118(V)

coded to a radar

sight

and

provisions and embedded

interrogator

EMERGENCY

encrypted Mode 4

system.

panel.

operation.

Transponder set

RT-1471/

Transmits a reply

Line of

MPD, EUFD,

Optional installation to

APX-100(V)

coded to a radar

sight

and

RT1836/APX - 118

interrogator

EMERGENCY

system.

panel.

Identification

Kit-1C computer

Provides encrypted

Not

Not applicable

Not reguired for

Friend or Foe

mode 4 operation.

applicable

RT1836/APX - 118

(IFF)

Communication

CIU

Provides

Not

Not applicable

Provides audio switching,

Interface Unit

P/N

centralized

applicable

conditioning, and mixing

7-513200010

processing and

capabilities; crew monitor

distribution of

and transmitter

communication

selections; and voice

data and audio

messages and warning

signals.

tones.

Improved Data

IDM, MD-1295/A

Provides a host

Not

MPD

IDM V7.1x supports

Modem

TYPE - 304

interface between

applicable

transmit/receipt of

VERSION 7.1x

tactical aircraft

Longbow, TACFIRE,

radios and data

Tactical Internet, and Fire

bus.

Support protocol data.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 3

3A-3

TM 1-1520-251-10

Table 3A-1.

Communication/Navigation Equipment - continued

Control

Equipment

Nomenclature

Use

Range

Location

Remarks

Embedded

GPS

Provides position

Not

MPD

Global

and velocity

applicable

Positioning

information to the

Inertial

INU

Navigation

System (EGI)

INU

Provides

Not

MPD

acceleration,

applicable

angular rate,

heading, velocity,

position, and

position error

estimates data.

Radar Altimeter

Altimeter, Radar

Provides actual

0 - 1428 ft

MPD/IHADSS

AN/APN-209

terrain clearance

height.

Doppler Radar

AN/ASN-157

Provides aircraft

Not

MPD

Velocity Sensor

referenced ground

applicable

(DRVS)

velocities to the

EGI.

Air Data System

ADS

Computes air mass

Not

Not applicable

referenced data to

applicable

provide the

Omni-directional

airspeed,

Barometric Altitude,

and Outside Air

Temperature

information

necessary to

display Mean Sea

Level (MSL) terrain

elevation for the

aircraft present

position.

Automatic

AN/ARN-149

Provides a relative

Line of

MPD

Direction Finder

bearing to the

sight

(ADF)

station signal as

well as an audio

output of the

received signal.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3A-4

Change 2

TM 1-1520-251-10

Section II. COMMUNICATIONS SUBSYSTEM

3A.4 INTRODUCTION

• MD-1295/A Improved Data Modem (IDM)

• Load Maintenance Panel (LMP) (COMSEC)

This section covers the description and operation of the

aircraft communication subsystem and the Transponder/

NOTE

IFF subsystem (fig 3A-2). Both voice and digital commu-

The APX-100(V) Transponder or

nications are supported by the following equipment:

APX-118(V) may be installed. If

APX - 100(V) is installed, Kit - 1C computer

• ARC-186(V) VHF-AM Radio Set

must be installed for Mode 4 operation.

• ARC-164(V) UHF-AM Radio Set (HAVEQUICK)

Each crewstation provides the crew with independent

• TSEC/KY-58 (CIPHER DEVICE)

control and status monitoring of the communication sub-

system via the Multi - Purpose Display (MPD), Enhanced

• ARC-201D VHF-FM (SINCGARS) 2 each

Up Front Display (EUFD), and Keyboard Unit (KU). In

• IFM-101A/AM-7189A/ARC Improved FM (IFM)

addition, monitor select and volume/squelch controls for

Amplifier

each of the five radios are controlled by the COMM panel

in each crewstation. The communication subsystem

• ARC-220 HF Radio Set

equipment is powered from the battery bus and defaulted

to ON when power is applied. However crew control of the

• TSEC/KY - 100 (HF CIPHER DEVICE)

radios is limited until aircraft or external power is applied.

• APX-100(V) Transponder

After aircraft power has been applied to the MPDs, rapid

initialization of the radio presets and Signal Operating In-

structions (SOI) can be accomplished via the Data Trans-

• APX-118(V) Transponder

fer Unit (DTU).

AM1789A/ARC

ARC−186

IMPROVED FM

VHF−AM RADIO

AMPLIFIER

ARC−201D (FM2)

VHF−FM RADIO

SYSTEM

PROCESSOR q2

HF POWER AMPLIFIER

COUPLER

ARC−201D (FM1)

DATA TRANSFER

UNIT

VHF−FM RADIO

ARC220 HF RADIO

DISPLAY

ARC−164

PROCESSOR q2

UHF−AM RADIO

COMMUNICATION

INTERFACE

UNIT (CIU)

KY−58/TSEC

PROCESSOR

SECURE VOICE

KY−100/TSEC

PROCESSOR

SECURE VOICE / DATA

KIT−1C/TSEC

MD1295/A

IMPROVED DATA

TRANSPONDER

MODEM (IDM)

COMPUTER (WITH APX100)

SYSTEM

DISPLAY

APX−100(V) OR APX118(V)

PROCESSOR q1

IFF TRANSPONDER

LBA5080A

Figure 3A-2. Communications Subsystem

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3A-6

Change 3

TM 1-1520-251-10

3A.5 ARC-186(V) VHF-AM RADIO SET

a. Time of Day (TOD). The TOD is synchronized to

the radio clock, which is normally set to Coordinated Uni-

versal Time (UTC). The TOD is required by the radio to

The aircraft has one ARC-186 VHF radio which provides

maintain its internal clock, which controls the FH timing.

two-way communication over VHF-AM frequency range

The crew may send or receive the TOD signal if FH com-

(116.000 through 151.975 MHz) in 0.025 MHz channel

munication is desired through non - TOD synchronized ra-

spacing.

dios. Receiving the TOD affects only the internal clock of

the UHF radio.

NOTE

b. Word of Day (WOD). The WOD is classified and

ARC-186 FM frequencies (30.000 through

controlled by the National Security Agency (NSA). The

87.975 MHz) are not implemented. See

WOD programs the FH pattern and rate. The radio cannot

paragraph 3A.8

function in the FH mode without a valid WOD. A WOD is

required for each day and consists of up to six segments,

3A.5.1 VHF Tone. Selecting the VHF TONE button will

which code the radio for FH. For HaveQuick 2 radios, the

not generate a tone from the radio but will transmit a ”dead

WOD must be tagged with its operational day (1-31). The

carrier” over the air for maintenance.

WODs are loaded into the radio through the DTU or by the

crew.

3A.6 ARC-164(V) UHF-AM RADIO SET (HAVE

c. Net Number. The net number programs the radio

QUICK)

to operate in one of the FH modes, selects the frequency

table to be used and determines entry point into the FH

The aircraft has one ARC-164 UHF radio which provides

pattern. Net numbers enable multiple station pairs to op-

two-way communications over UHF-AM frequency range

erate simultaneously using the same WOD and TOD with-

(225.000 through 399.975 MHz) in 0.025 MHz channel

out interference. The net number will be loaded into the

spacing. The radio contains a separate, dedicated guard

radio through the DTU or via the crew.

receiver fixed tuned to 243.000 MHz, thus providing capa-

bility to simultaneously monitor guard frequency (243.000

3A.6.2 UHF Tone. Selecting the UHF TONE button

MHz) while receiving and transmitting on any frequency

generates an audio tone from the radio and transmits the

other than 243.000 MHz. When the transceiver is tuned to

tone over the air.

243.000 MHz, the dedicated guard receiver is automati-

cally turned OFF. The radio set has squelch capability and

3A.7 TSEC/KY-58 VOICE SECURITY SYSTEM

can operate in either single channel or frequency hopping

mode. The frequency hopping capability of the UHF radio

The aircraft has one TSEC/KY-58 Voice Security System

is referred to as HAVE QUICK. There can be one of two

for the UHF radio, which provides encrypted communica-

versions of HAVE QUICK radios installed in the aircraft.

tion. The TSEC/KY-58 has the capability to store up to six

HAVE QUICK 1 radios provide the capability to load one

Crypto Net Variables (CNV). CNVs are COMSEC vari-

word of day into the radio and utilize 6 training frequencies

ables required to establish the encryption process inside

for the training mode. HAVE QUICK 2 radios provide the

the TSEC/KY-58. CNVs are generally loaded directly into

capability to load up to six words of the day into the radio

the TSEC/KY-58 with a fill device by the maintenance

and utilize 16 training frequencies for the training mode.

crew at the Remote Selectable Fill Port, but may also be

loaded through RF Link. TSEC/KY-58 controls are imple-

3A.6.1 Frequency Hopping (FH) Capability (HAVE

mented on the MPD and/or the EMERGENCY Panel and

QUICK). The FH capability is an Electronic Counter-

the LMP.

Counter Measure (ECCM) enhancement to the standard

UHF radio by which the frequencies being used and the

3A.7.1 KY-58 Tones. The KY-58 generates tones for

dwell times are rapidly changed many times a second.

variable loading and failure conditions. An additional tone

The radio requires three items to determine the FH pat-

is generated when the KY-58 is ready to transmit or re-

tern:

ceive.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 3

3A-7

TM 1-1520-251-10

NOTE

3A.9 IMPROVED FM (IFM)

The FM radios can take as long as 10.0 sec-

The aircraft has one IFM amplifier to vary the RF power

onds to completely tune/configure to a COM

output of the FM1. The four power levels are listed in

preset. the FM radios are available for voice

Table 3A-2.

transmission within 2.0 seconds of tuning

but the transmissions may be broken.

Table 3A-2. RF Output Levels

Power Setting

Effective Radiating Power (Watts)

3A.8 AN/ARC-201D VHF-FM SINGLE CHANNEL

GROUND & AIRBORNE RADIO SET (SINCGARS)

LOW

2.5

The aircraft has two ARC-201D VHF-FM radios with Soft-

NORM

10.0

ware Improvement Program (SIP) enhancements. The ra-

dio sets provide two-way communications over the VHF-

HIGH

40.0

FM frequency range of 30.000 through 87.975 MHz in

OFF

10.0

0.025 MHz channel spacing. The radio set operates in ei-

ther single channel or frequency hopping (FH) mode. The

The communications subsystem provides capability to set

two ARC-201D radios are referred to as FM1 and FM2 or,

IFM Power to LOW /NORMAL /HIGH /OFF via the MPDs.

in general, as FM. Secure voice/data communications are

provided by COMSEC equipment which is embedded in

the radios. Each SINCGARS - SIP radio (FM1/FM2) has a

Carrier Sense Multiple Access (CSMA) line installed that

CAUTION

communicates directly with the IDM. The CSMA connec-

tion with the IDM is required for Joint Variable Message

• The IFM should be turned OFF when

Format (JVMF) communications over Tactical Internet (TI)

operating the radios on battery power

and Fire Support (FS) Protocols. The CSMA supports ad-

to avoid draining the aircraft battery.

vanced net monitoring (Net Access Delay) capabilities

• Transmitting IFM in HIGH while both

and is used to report the ARC - 201D’s configuration status

FMs are tuned to the same frequency

to the IDM whenever a TI or FS preset - net is tuned.

may cause damage to the FM2 receiv-

3A.8.1 Frequency Hopping (FH) Capability. This en-

er.

hancement provides a FH capability (frequencies and

NOTE

dwell times are rapidly changed many times a second).

Failure of the IFM will turn off the sidetone

FH provides an anti-jamming capability which can operate

from the ARC-201D FM1 radio. An IFM fail-

in conjunction with a secure communications mode. Zer-

ure is also reported during radio IBIT. The

oizing the individual radio can be accomplished from the

FM1 radio may still be able to transmit at its

MPD. Three items required to determine FH patterns are:

own internal power of 10 Watts. Should an

a. Time. Time is in the form: day, hour, and minutes.

IFM failure occur it is recommended to turn

Time is required by the radio to maintain its internal clock,

IFM off.

which controls FH timing.

3A.10 AN/ARC-220 HF RADIO SET

b. Hopset. The Hopset is classified and controlled

The aircraft has one ARC-220 HF radio. The ARC - 220

by the NSA. The Hopset programs frequency hopping

provides High Frequency airborne communications in the

rate and frequency hopping pattern. The range of Hopsets

2.0000 through 29.9999 MHz frequency range, in 0.1 kHz

is between 001 - 999. There are up to six Hopsets loaded

spaced steps. The ARC-220 operates in the following

into the radio. Hopset information can be inserted locally

modes:

through the fill device with control provided by the load

• Manual tuning

maintenance panel (LMP) and connected via the remote

selectable FILL port. It can also be distributed by Radio

• Preset Channel tuning

Frequency (RF) link also known as ECCM Remote Fill.

• ALE (Automatic Link Establishment)

• ECCM Frequency Hopping

c. Lockout Set. During frequency selection for the

Hopsets, it may be determined that interference may re-

• Emergency

sult between two nets using the same frequency. In this

The Emergency mode is a preprogrammed configuration

case one of two types of lockouts, common or unique, is

of the ARC- 220 radio. The ARC - 220 radio will be referred

automatically loaded when the system locally filled or

to hereinafter as the HF radio. Refer to Table 3A-3 for HF

through an ECCM Remote Fill.

advisory and status messages.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3A-8

Change 3

TM 1-1520-251-10

Table 3A-3. HF Radio Advisory/Status Message

XMIT READY

Radio has transmitted ECCM

Table

preamble and is ready to transmit.

Advisory/Status

Description

ZEROIZED

Radio is being zeroized.

Message

ANT TUNING

Radio is tuning the antenna

3A.11 KY - 100 HF RADIO COMMUNICATION

SECURITY SYSTEM

ANT UNTUNED

Radio ECCM net is not pre - tuned

CALLING

An ALE call is being transmitted

The aircraft has one TSEC/KY - 100 Communications Se-

curity System which provides encrypted communications

CALL FAILED

ALE call has failed on all attempts.

for the HF radio. The TSEC/KY-100 transforms voice,

digital data, or analog data into ciphertext information.

CALL RESPND?

ALE call detected: however, radio

The TSEC/KY - 100 has the capability to store up to six

set to SILENT mode, crew must

press PTT to establish call.

Crypto Net Variables (CNV). CNVs are COMSEC vari-

ables required to establish the encryption process inside

CHECK MSG

Radio received text message: can

the TSEC/KY-100. CNVs are generally loaded directly

be reviewed and/or deleted.

into the TSEC/KY - 100 with a fill device at the Remote Se-

lectable Fill Port, but may also be loaded through RF Link.

FILL CHECK

Radio is checking fill data.

TSEC/KY - 100 controls are implemented on the MPD.

FILL PROCESS

Radio is processing fill data.

3A.12 APX-100 TRANSPONDER

FILL RECVING

Radio is receiving fill data.

FILL WAITING

Radio is waiting for fill data.

The aircraft contains one transponder, an APX-100 or

APX - 118 (para 3A.12A), which provides automatic radar

GO DATA ONLY

Transmission quality poor, should

identification of the aircraft to all suitably equipped sta-

switch to data transmission only.

tions. The transponder receives, decodes, and responds

to interrogation of the following modes:

LINKED

ALE link established

PP RECEIVED

Radio received a present position

MODE 1

Provides 32 possible code

report; can be stored or deleted.

combinations that can be selected

RECVING CALL

Incoming ALE call being received.

in-flight. Possible code combinations

are: 00-03, 10-13, 20-23, 30-33, 40-43,

RECVING DATA

Radio is receiving digital data.

50-53, 60-63, and 70-73.

MODE 2

Provides 4096 possible code

SOUNDING

Radio is sounding.

combinations. The desired code must

SENDING DATA

Radio is sending digital data.

be set on the ground on the APX-100

located behind access panel L160.

SENDING TIME

Radio is sending the current time.

Possible code combinations are

0000-7777.

STANDBY

Radio is in standby mode.

MODE 3/A Provides 4096 possible code

SYNCING

Radio is synchronizing.

combinations that can be selected

in-flight. Possible code combinations

TIME SYNC

Synchronized time between radios

are 0000-7777.

FAIL

has failed

MODE C Provides altitude information obtained

UNSYNC

Radio is currently not synchronized.

from the FMC.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 3

3A-9

TM 1-1520-251-10

NOTE

3A.12A APX-118 TRANSPONDER

• KIT - 1C is not required in the aircraft with

The APX - 118 provides automatic radar identification of

the APX - 118 transponder.

the aircraft to all suitably equipped stations. The trans-

ponder receives, decodes, and responds to interrogation

• When the KIT-1C is not installed in the

of the following modes:

aircraft, the MODE 4 selection will not be

shown on the MPDs.

MODE 1

Provides 32 possible code

combinations that can be selected

in-flight. Possible code combinations

3A.12.1 KIT-1C MODE 4 Computer. Provides a cryp-

are: 00-03, 10-13, 20-23, 30-33, 40-43,

to-secure mode of identification for the APX - 100 trans-

50-53, 60-63, and 70-73.

ponder, by relying on an encrypted interrogation. It utilizes

MODE 2

Provides 4096 possible code

two classified operational codes which are loaded directly

combinations. Possible code

into the KIT-1C computer via a fill device through the Re-

combinations are 0000-7777.

mote Selectable Fill Port in the aft avionics bay. Code

selection is limited to A or B, which corresponds to the op-

MODE 3/A

Provides 4096 possible code

erational day. Other MODE 4 capabilities are:

combinations that can be selected

in-flight. Possible code combinations

• When on the ground, the MODE 4 HOLD

are 0000-7777.

enables the computer to save the last

MODE 4

Provides a crypto - secure mode of

MODE 4 codes for utilization on the next

identification by relying on an encrypted

power-up.

interrogation. It utilizes two classified

operational codes which are loaded

• IDENT selection located on the MPD and

directly into the transponder via a fill

COMM panel enables IDENT transmis-

device through the Remote Selectable

sion to ID ownship on others’ radar

Fill Port in the aft avionics bay. Code

screens.

selection is limited to A or B, which

corresponds to the operational day.

• Selectable MODE 4 audio cueing.

MODE C

Provides altitude information obtained

from the FMC.

• Selectable MODE 4 EUFD visual cueing.

MODE S

Provides Aircraft Address, Aircraft Tail

Number, and the Aircraft Flight ID.

• Selectable EMERGENCY mode.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3A-10

Change 4

TM 1-1520-251-10

b. The IDM serves as the Tactical Internet Controller

CAUTION

Device (TICD) for aviation. It is compatible with the Force

Battlefield Command for Brigade and Below (FBCB2) de-

Failure to place the IDM in STBY mode

vice and the TI architecture. A TI/FS Carrier Sense Multi-

prior to removing aircraft power may re-

ple Access line connects both of the ARC - 201D radios di-

sult in corrupted data files or damage to

rectly to the IDM. The CSMA implementation supports:

the IDM.

• TI and FS net access and monitoring requirements

• Upon tuning the SINCGARS - FS and/or SINC-

3A.13 IMPROVED DATA MODEM (IDM)

GARS - TI frequency, the SINCGARS SIP radio(s)

configuration is reported to the IDM.

NOTE

Through the CSMA port, the IDM compares the SINC-

Testing has shown that reception ranges are

GARS radio configuration with its own configuration. If a

often degraded by five NM or more over

mismatch is detected, a white NET JOIN status is dis-

those ranges where voice communication

played on COM page while an automatic net join synchro-

can be received.

nization process is conducted. The status is removed

once the IDM and the ARC - 201D radio are synchronized.

The aircraft is configured with a single IDM, which sup-

The NET JOIN status will remain displayed in the rare

ports the digital communication requirements for Long-

case where the NET JOIN synchronization fails: the oper-

bow Air Force Application Program Development

ator may attempt another SINCGARS - FS/TI tune to re -

(AFAPD), TACFIRE, Tactical Internet and Fire Support

start the NET JOIN process.

protocols.

c. The IDM’s two major software and hardware ver-

a. The IDM serves as the digital host interface be-

sion numbers may be recalled and displayed on the DMS

tween the aircraft’s radios and the data bus for specific

VERS page. IDM’s TACFIRE software and processor

mission equipment. IDM communications occur over a

firmware versions are recalled through the following

crewmember’s selected digital radio channel, as deter-

ATHS page button tree: START page 1/3, RESET DATA>

mined by that crewmember’s EUFD IDM transmit select

page 1/1, <SW - VERS page 1/4, 2/4, 3/4, and 4/4 pages.

indicator, or the tuned FM1 or FM2 radio for Fire Support

artillery messages. Management of the IDM is performed

NOTE

through the communications subsystem.

The IDM’s hardware and software version

NOTE

numbers are not displayed on VERS page if

IDM is in STBY.

• Each crewstation is equipped with its own

unique EUFD IDM select switch and indi-

cator (fig 3A-4). A blocked diamond sym-

d. The IDM is implemented with an INHIBIT button on

bol on the left side of the EUFD format

the SET page that, when selected, inhibits all IDM radio

represents each station’s unique IDM se-

data transmissions. The IDM receives data transmissions

lect indicator.

but does not automatically respond. The INHIBIT feature

is primarily used during refuel/rearm operations.

• The opposite crew member’s EUFD IDM

select indicator (fig 3A-4) is displayed as

a filled diamond symbol. If both crew

e. Prior to removing power from the aircraft, the IDM

members have the same radio selected

button is required to be placed to STBY. In STBY, the IDM

for IDM transmit, then a filled block sym-

is no longer capable of transmitting any data messages

bol will be displayed.

and will no longer receive JVMF messages. The IDM but-

ton is located on both the DMS SHUTDOWN page and

• The IDM select indicator is not used by

SET pages.

the system when a FS preset-net is

tuned to either FM1 or FM2 and a TSD

RPT ARTY page message is sent or re-

3A.14 LOAD MAINTENANCE PANEL (LMP)

ceived.

• The IDM will delete all JVMF messages

The LMP (fig 3A-3) consists of a keypad, display, front

(TI and FS) anytime that the TI is de-

panel control switches, and knobs. It is co-located in the

tuned.

RH aft avionics bay with the Remote Selectable Fill Port.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 4

3A-11

TM 1-1520-251-10

1=RADIOS

3=GUNS

2=CRYPTOS

4=ASE

1:4:

6PD

6IL

6RC

6SK

6WP

LBA5081

Figure 3A-3. Load Maintenance Panel

3A.14.1 LMP Capabilities. The LMP provides the fol-

NOTE

lowing capabilities:

ICS communication is the only recom-

mended communication during PTT opera-

• Position pylons for loading stores.

tions. Do not use UHF at this time.

• Override the SQUAT SWITCH setting to simulate

airborne conditions for troubleshooting and testing

3A.14.3 Press-To-Talk (PTT) Button. The PTT button

while on the ground.

enables the transfer of Crypto Net Variable(s) from the Fill

device to the KY-58. This CNV transfer can be initiated by

• Display and specify rocket types associated with

keying the appropriate radio from either crewstation.

each of the aircraft rocket zones.

3A.14.4 LMP Lighting. To save power, all LMP dis-

• Display and specify 30mm Gun rounds count.

plays and lamps are extinguished while airborne. After

landing, pressing any LMP keypad button reactivates the

• Display and specify Chaff count.

LMP displays and status lights. This initial key press is not

interpreted as a data entry keystroke.

• Specify data download to the FM radios.

• Specify/verify data download to the HF radios.

3A.14.5 RADIO Selections. LMP provides the capabil-

ity to select the individual radio formats (1= FM1; 2= FM2;

• Specify data download to the HF Radio’s Crypto

3= HF) for data fills and HF data verification. Selection of

device

the ESC key returns the operator to the index.

• Press-to-talk (PTT) and Remote Override (RMT

a. FM1 and FM2 Radio Fill Selections. The LMP

ORIDE) COMSEC pushbuttons.

provides for frequency hopping and COMSEC variable fill

selections via LMP keyboard. Selections are available for

3A.14.2 Remote Override (RMT ORIDE) Button. The

the following fill device capabilities:

RMT ORIDE button disables MPD control and enables

• Single Hopset Preset

front panel (KY-58) control capabilities for Crypto Net Vari-

ables loading purposes. The RMT ORIDE button is auto-

• Single Lockout Set Preset

matically disabled when the aircraft is airborne and must

• Single COMSEC variable

be manually actuated on the ground for any further load-

ing.

• Complete set of Hopset/Lockout Set/COMSEC

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3A-12

Change 2

TM 1-1520-251-10

Single Hopset/Lockout Set/COMSEC variable filling re-

The IDM rocker permits cycling up or down through the

quires two separate fill devices. A complete set of Hopset/

displayed list of radios. Repeated momentary depression

Lockout Set/COMSEC variable filling can be achieved

of down selections beyond the last radio in the list will

with a single fill device. LMP display feedback is provided

cause the IDM indicator to start over at the top of the list.

for function in-progress, function completion, function

Repeated momentary depression of up selections beyond

PASS and function FAIL status.

the first radio in the list will cause the RTS indicator to start

over at the bottom of the list.

b. HF Radio Fill Selections. The LMP provides for

3A.15.2 Radio Transmit Select

(RTS) Rocker

keyfill, datafill, and verification selections via LMP key-

Switch. The RTS switch permits the operator to select a

board. A fill device is required for both the keyfill and data-

radio for voice transmission. The RTS switch is located on

fill. The following selections are available from the LMP

the lower left side of the EUFD, to the right of the IDM

with the HF radio option selected:

rocker switch, and below the WCA rocker switch.

• Keyfill load

The EUFD displays a filled - left - arrow character on the

• Datafill load

left side of the format for that crewstation’s RTS indicator.

the opposite crewstation’s RTS indicator is displayed as a

• Verify keys

filled - right - arrow character. The RTS rocker permits cycl-

• Verify data

ing up or down through the displayed list of radios. Re-

peated momentary depression of down selections beyond

The VERIFY KEYS selection provides status of the key

the last radio in the list will cause the RTS indicator to start

load for LP3 (cipher for ECCM) and ECCM. The VERIFY

over at the top of the list. Repeated momentary depres-

DATA selection provides status of the datafill load. A dis-

sion of up selections beyond the first radio in the list will

play of the HF MODE CHANGE FAIL message indicates

cause the RTS indicator to start over at the bottom of the

when the HF failed to change modes properly when com-

list.

manded to perform a keyfill, datafill, verify keys, or verify

3A.15.3 Preset (P) Button. The P button opens or

data. The datafill load verification and return code in-

closes the EUFD Preset Window on the EUFD display.

cludes:

The EUFD Preset Window is used to select one of ten

• PRE OP (operable), ND (no data), NK (no

single channel presets for tuning the selected voice radio.

keys)

The P button is located on the right side of the EUFD dis-

play just below the brightness BRT knob.

• LP3

OP, ND, NK

• ECCM OP, ND, NK

3A.15.4 Preset Enter button. The Preset Enter

(down - left arrow) button is used to initiate a single chan-

• MAN OP, ND, NK

nel tuning of the selected voice radio, based on the preset

• ALE

OP, ND, NK

selected indicator (i.e. arrow symbol) in the EUFD Preset

Window. The Preset Enter button is located to the right of

• EMER OP, ND, NK

the P button, and above the Swap button.

3A.14.6 LMP CRYPTO Selection. The LMP CRYPTO

3A.15.5 Swap Button. The Swap button permits the

selection provides the capability to access the formats for

exchange (”swapping”) of the standby frequency/mode,

selecting the installed individual crypto devices for key

call sign, and net type with the primary frequency/mode,

fills.

call sign, and net type for the currently - selected radio as

displayed in the EUFD. In addition to the swapping of

3A.15 UP FRONT DISPLAY (EUFD)

data, the system will automatically tune a frequency and

COMMUNICATION CONTROLS

reconfigure the corresponding radio and IDM when the

net type is L (Longbow AFAPD), T (TACFIRE), I (Tactical

EUFD communication controls (fig 3A-4) are as follows:

Internet) or F (Fire Support). The swap button, with two

“turning arrows” is located to the right of the stop watch

3A.15.1 IDM Rocker Switch. The IDM switch permits

button and below the preset enter button. The standby fre-

the operator to select a tuned radio for IDM data message

quency/mode, call sign, and net type is located on the

transmission. The IDM switch is located on the left side of

right side of the display and the primary frequency/mode,

the EUFD, centered, to the left of the RTS and WCA rock-

call sign, and net type for the current RTS radio is dis-

er switches.

played on the left side of the display.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 2

3A-13

TM 1-1520-251-10

3A.16 EUFD COMMUNICATIONS DATA FORMAT

• When SINCGARS is in Frequency Hopping mode,

the Active Hopset is displayed in the correspond-

The EUFD displays a select subset of current status infor-

ing EUFD FM Current Frequency location in the

mation of the communication subsystem, in the lower half

form Fxxx, where xxx is the Hopset ID.

of the display (fig 3A-4).

Call Sign (EUFD primary) currently assigned to

the currently tuned radio: MAN = manual tune;

GUARD = Guard tune

HF radio status (Table 3A-3).

Cipher Off/On status and Crypto Net Variable

(UHF, FM 1, FM 2, and HF only).

Guard (G) receiver Off/On (UHF only).

LBA5031A

10.

Power status. IFM power status includes OFF,

LOW, NORM, HIGH. HF power status includes

LOW, MEDIUM, HIGH.

Figure 3A-4. EUFD Data Format

11.

IDM Net status (I = Internet, F = Fire Support, L

= Longbow {AFAPD}, and T = Tacfire).

EUFD communications symbology, used in the display

fields (fig 3A-4) are numbered as follows:

12.

Tactical Internet Connected indicator. Presence

of a filled circle superimposed with an X indi-

1. The EUFD displays a blocked diamond symbol

cates that preset is tuned to the Tactical Internet

in the left - most field of the display for that

(I) protocol and the TI radio is connected to the

crewstation’s IDM (transmit/receive) indicator.

TI - Network.

The opposite crewstation’s IDM indicator is dis-

played as a filled diamond symbol. If both crew

13.

Standby (last tuned) frequency/FH parameters.

members have the same radio selected for IDM

data transmission, then a filled block symbol will

14.

Standby Call Sign is a previously tuned preset

be displayed.

that is now passively resident in the EUFD’s

standby area until swapped back to primary.

2. The EUFD displays a left - pointing arrow symbol

in the second field for that crewstation’s RTS

15.

Standby IDM Net Status (I, F, L, or T)

(transmit/receive) indicator. The opposite

crewstation’s RTS indicator is displayed as a

16.

Transponder identifier.

right - pointing arrow symbol. Dots (no arrow) in-

17.

Transponder Mode 3/A status and code.

dicate that the radio is enabled for monitoring

(receiving) only.

18.

XPNDR Mode 4 code. Presence of code indi-

cates Mode 4 is On.

3. Radio identifier (VHF, UHF, FM1, FM2 or HF ).

19.

Transponder Master Control (STBY/NORM/

4. Squelch Off/On status (asterisk indicates

EMER) status.

squelch On).

20.

XPNDR Mode S enable/disable status which is

5. Currently tuned frequency/FH parameters.

only displayed if an APX - 118 is installed.

• When the UHF radio is in Frequency Hopping

3A.17 COMMUNICATIONS (COMM) PANEL

mode, the UHF frequency displayed on the EUFD

is an ’F’ followed by the net number. When in the

There is a COMM panel (fig 3A-5) in each crewstation to

Training mode, the UHF frequency displayed on

provide volume control and other functions for the respec-

the EUFD is a ’T’ followed by the training net

tive crewstation. Following is a description of the COMM

number.

panel controls:

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

3A-14

Change 4

TM 1-1520-251-10

3A.17.5 ICS Mode Switch. The ICS mode switch pro-

vides selection of the audio keying system for commu-

nication between crew stations. Following are the three

modes that can be selected with the ICS switch:

ÑÑÑÑÑ

ÑÑ

ÑÑÑÑÑ

ÑÑ

ÑÑÑÑÑ

a. Push-To-Talk (PTT). The PTT position allows

communication only while the ICS PTT switch is being de-

pressed.

ÑÑ Ñ

b. VOX. The VOX position allows communication

between crewmembers only when their voice levels ex-

ÑÑÑ

ceed the threshold level as set with the SENS control.

ÑÑ

ÑÑÑ

c. HOT MIC. The HOT MIC position allows continu-

ous communication between crewmembers.

ÑÑÑÑÑ

ÑÑ

ÑÑÑÑÑ

ÑÑ

ÑÑÑÑÑ

3A.17.6 IDENT Switch. The IDENT switch allows the

transponder to be placed in IDENT mode. This switch per-

LBA0072

forms the same function as the IDENT option label located

on the MPD XPNDR page.

Figure 3A-5. Communications (COMM) Panel

3A.17.7 AUX Controls

a. Identification, Friend or Foe (IFF). The IFF

3A.17.1 Volume Controls. The top row of five knobs

knob provides independent volume control of the IFF

provide independent volume control for the respective ra-

MODE 4 audio.

dios. Monitoring of the radios, VCR, and ADF audio can

be disabled by pulling out the respective control knob

b. Radar/Laser Warning Receiver (RLWR). The

which removes the appropriate monitor status dot from

RLWR knob provides independent volume control of the

the EUFD, unless selected as the active transmitter.

RLWR audio.

3A.17.2 Squelch (SQL) Switches. The SQL switches

c. Air - To - Air (ATA). This knob is not currently

are momentary toggle switches that provide squelch on/

used.

off capability. There is a SQL switch for each radio, lo-

cated directly below the corresponding volume control

d. Video Cassette Recorder (VCR). The VCR

knob.

knob provides independent volume control of the VCR

playback audio.

3A.17.3 MASTER Control. The MASTER control pro-

vides the capability to adjust the audio level (volume) of all

e. Automatic Direction Finder (ADF). The ADF

signals associated with the communication subsystem

knob provides independent volume control of the ADF au-

and controls the applicable crewstation helmet and wing

dio.

connection volume levels.

3A.18 EMERGENCY PANEL

3A.17.4 Sensitivity (SENS) Control. The SENS con-

trol provides the capability to adjust the audio threshold

level when the ICS mode switch is in the VOX position.

The EMERGENCY panel (fig 3A-6) communications func-

The system only transmits when voice level exceeds the

tions provides for tuning the UHF radio to the GUARD fre-

threshold setting of the SENS adjustment. To increase

quency, selection of the transponder (XPNDR) emergen-

sensitivity rotate control clockwise.

cy mode, and zeroizing classified data.

Use or disclosure of this information is subject to the restriction(s) on the title page of this document.

Change 2

3A-15

HELICOPTER, ATTACK, AH-64D LONGBOW APACHE. TECHNICAL MANUAL (2002) - page 6