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

TM 1-1520-251-10

Table 3A-4. Messages - continued

RADIO

Message Format

AFAPD

ATHS

JVMF

N/A

Protocols

LONGBOW

TACFIRE

MESSAGE

TSD REC

REC

AIR FIRE MISSION - EOM

OBSERVER READINIESS

REPORT

AIR FIRE MISSION - ACPT/REJT

AIR FIRE MISSION - READY

AIR FIRE MISSION - SHOT

CALL FOR FIRE

ON - CALL FIRE COMMAND

MESSAGE TO OBSERVER

X*2

OBSERVER MISSION UPDATE

X*2

CHECK FIRE - ALL or MISSION

CANCEL CHECK FIRE - ALL or

MISSION

ADJUST FIRE - REPEAT/RNDS

IMPACT

END OF MISSION AND

SURVEILLANCE

FRAGO (FIELD ORDERS)

INFORMATION REQUEST

SA DATA (Sent automatically)

ATHS MESSAGES

X*3

X*3,

NOTE 1

Cannot perform auto - response in JVMF, but can issue report.

NOTE 2

This is a technical capability that does not reflect the normal operational use of this message.

NOTE 3

Reviewing an ATHS MSG from the COM MSG RCV page will call the ATHS message receive

page to display. The sending and receiving of all ATHS/TACFIRE messages can only be

achieved through the ATHS page structure and not the TSD or MSG SEND/MSG RCV pages.

Refer to table 3A-4E for ATHS/TACFIRE message types that are supported by the IDM.

NOTE 4

ATHS messages are not uniquely defined for TSD REC function and a standard ATHS MSG

descriptor is used to annunciate the receipt of an ATHS (TACFIRE) message.

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

Change 3

3A-81

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Table

3A-4A. To transmit LONGBOW Messages

TYPE OF MESSAGE

MPD SELECTIONS/ACTIONS

TO SEND MESSAGE

RF Target Handover

After FCR scan, on FCR display

Select PRI member, then SEND

select NTS. Select RFHO

FCR Targets - All

TSD RPT TGT ALL

Select PRI member, then SEND

FCR Targets - Priority

TSD RPT TGT PRI

Select PRI member, then SEND

FCR Targets - Single or Multiple

TSD RPT TGT Cursor select single

Select PRI member, then SEND

or multiple FCR target icons

Shot At - All

TSD RPT BDA ALL

Select PRI member, then SEND

Shot At - Ownship

TSD RPT BDA OWN

Select PRI member, then SEND

Mode MSG to SEND

Shot At - Query

TSD RPT BDA OWN

Select PRI member, then SEND

Mode MSG to RQST

Pres Posn Report

TSD RPT PP

Select PRI member, then SEND

Mode MSG to SEND

Pres Posn Query

TSD RPT PP

Select PRI member, then SEND

Mode MSG to RQST

FARM Report

TSD RPT FARM

Select PRI member, then SEND

Mode MSG to SEND

FARM Query

TSD RPT FARM

Select PRI member, then SEND

Mode MSG to RQST

Single Stored Target/Threat

TSD POINT XMIT

Select PRI member, then SEND

Use cursor to select or point data

entry method to select target or

threat

Single Waypoint/Hazard

TSD POINT XMIT

Select PRI member, then SEND

Use cursor to select or point data

entry method to select

waypoint/hazard

Single Control Measure

TSD POINT XMIT

Select PRI member, then SEND

Use cursor to select or point data

entry method to select control

measure

Zones - Priority Fire

TSD BAM PF

Select PRI member, then SEND

Zones - No Fire

TSD BAM NF

Select PRI member, then SEND

Zones - All

TSD BAM BOTH

Select PRI member, then SEND

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

3A-82

Change 3

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Table

3A-4A. To transmit LONGBOW Messages - continued

TYPE OF MESSAGE

MPD SELECTIONS/ACTIONS

TO SEND MESSAGE

Freetext

COM MSG SEND FREETEXT

SEND

SOURCE IDM Enter freetext

Waypoints file

COM MSG SEND CURRENT

SEND

MISSION WAYPOINTS

Routes file

COM MSG SEND CURRENT

SEND

MISSION ROUTE ALL

Single route

COM MSG SEND CURRENT

SEND

MISSION ROUTE, Select desired

Route

Laser codes

COM MSG SEND CURRENT

SEND

MISSION LASER CODES

Comm Data All

Not implemented in

BLK 2

Control Measures file

COM MSG SEND CURR MISSION

SEND

CONTROL MEASURES

Boundary/Phase Lines file

COM MSG SEND CURR MISSION

SEND

LINES

Engagement Areas file

COM MSG SEND CURR MISSION

SEND

AREAS

Stored Targets/Threats file

COM MSG SEND CURR MISSION

SEND

TGT/THRT

Current Mission - All

COM MSG SEND CURR MISSION

SEND

ALL

MISSION 1 - All files

COM MSG SEND MISSION 1

SEND

MISSION 2 - All files

COM MSG SEND MISSION 2

SEND

Table

3A-4B.

To Transmit JVMF messages over the Tactical Internet*

TYPE OF MESSAGE

MPD SELECTIONS/ACTIONS

TO SEND MESSAGE

Freetext

COM MSG SEND FREETEXT

SEND

SOURCE IDM Enter freetext

Information Request

TSD RPT PP

Select primary member, then SEND

Mode MSG to RQST

Present Position Report

TSD RPT PP

Select primary member, then SEND

Mode MSG to SEND

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

Change 3

3A-83

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Table 3A-4B. To Transmit JVMF messages over the Tactical Internet* - continued

TYPE OF MESSAGE

MPD SELECTIONS/ACTIONS

TO SEND MESSAGE

Spot Report

TSD RPT SPOT

Select primary member, then SEND

Modify options as required

*These messages can also be sent via

the Fire Support net

Table 3A-4C. To Transmit JVMF messages over the Fire Support Net*

TYPE OF MESSAGE

MPD SELECTIONS/ACTIONS

TO SEND MESSAGE

Call for Fire

TSD RPT ARTY MSG CFF

Verify primary member selected, then

SEND

Default to NTS or cursor select

target/threat. Modify options as re-

quired

Cancel Check Fire - All

TSD RPT ARTY MSG CANC CHK

Verify primary member selected, then

Select CMD to ALL

SEND

Cancel Check Fire - Single Mission

TSD RPT ARTY MSG CANC CHK

Verify primary member selected, then

Select CMD to RESUME or EOM

SEND

Check Fire - All

TSD RPT ARTY MSG CHK FIRE

Verify primary member selected, then

Select TARGET to ALL

SEND

Check Fire - Single Mission

TSD RPT ARTY MSG CHK FIRE

Verify primary member selected, then

Select TARGET to SINGLE

SEND

End of Mission

TSD RPT ARTY MSG EOM

Verify primary member selected, then

SEND

End of Mission/Surveillance

TSD RPT ARTY MSG EOM/SURV

Verify primary member selected, then

SEND

Modify options as required

Observer Readiness Report

TSD RPT ARTY MSG OBS RDY

Verify primary member selected, then

SEND

On Call Request

TSD RPT ARTY MSG CFF

Verify primary member selected, then

SEND

* These messages cannot be transmitted via the Tactical Internet. Conversely, all JVMF messages that can be

transmitted via the Tactical Internet can be sent via the Fire Support net as well.

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

3A-84

Change 3

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Table 3A-4D. To Transmit HF messages (SOURCE HF)

TYPE OF MESSAGE

MPD SELECTIONS/ACTIONS

TO SEND MESSAGE

Freetext

COM MSG SEND FREETEXT

SEND

SOURCE HF Enter freetext

Present Position (PP)

COM MSG SEND - SOURCE HF

SEND

PP Select

Pre Program Text (1 of 25)

COM MSG SEND - SOURCE HF

SEND

Select Pre Programmed Text Msg

3A.67 through 3A.70 Deleted.

• The artillery’s more recent 220B JVMF

protocol (equivalent to the AH - 64D FIRE

3A.71 ATHS - TACFIRE IMPROVED DATA MODEM

SUPPORT JVMF protocol) is the succes-

3A.71.1 ATHS-TACFIRE Mission Capabilities. Tacti-

sor to TACFIRE and is commonly, but not

cal Fire (TACFIRE) is a legacy battlefield communication

exclusively, the message protocol that is

tool that manages complex messages such as aerial and

used to request and control artillery fire

artillery fire requests, reports, emergency broadcasts, au-

with BLK2 AH - 64D.

tomatic reporting of status, movement commands, and

The 2.9I TACFIRE is designed to maintain current mission

general free text messages.

status for up to eight active airborne fire missions, two active

The primary function of TACFIRE is to coordinate firepow-

artillery fire missions, and two preplanned artillery fire mis-

er and communications with both legacy artillery systems

sions. The IDM retains all TACFIRE mission essential data in

and legacy OH-58D. The AH-64D type 304 IDM and

nonvolatile storage and will store 12-48 (1-4 TACFIRE ra-

avionics system supports the transmission and reception

dios) previously received TACFIRE messages. The system

of 2.9I TACFIRE messages, which are compatible with the

also supports the shooter/designator execution of a digital re-

Advanced Field Artillery Tactical Data System (AFATDS -

mote HELLFIRE mission and other airborne fire missions

when set to TACFIRE protocol), TACFIRE computer, For-

specifying rockets, gun, or HELLFIRE direct. The ATHS-

ward Entry Device (FED), and handheld Digital Messages

TACFIRE supports digital artillery fire missions as the For-

Device (DMD).

ward Artillery Aerial Observer (FAAO) and transmits/receives

spot situation reports, battle damage assessments, and

Like all the other IDM protocol messages, the crew station

casualty reports. Legacy aircraft team situational awareness

TACFIRE message receipt notification is provided

capabilities are enhanced by the ability to track team member

through the UFD (with tone) and the message receive

Fuel, Ammo, Rockets, and Missile (FARM) status along with

page.

the ability to track the present position of up to 15 team mem-

NOTE

bers per query.

• The AFATDS is the successor of the

TACFIRE computer. AFATDS is back-

ward compatible with the legacy TAC-

FIRE computer and the IDM ATHS - TAC-

FIRE (TACFIRE mode) message format.

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

Change 3

3A-85

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3A.71.2 Physical Description and Implementa-

3A.71.3

ATHS - TACFIRE Initialization.

tion. The IDM is composed of a single Line Replaceable

Unit (LRU) that receives pertinent data over the 1553B

NOTE

bus from the DMS, EGI, SP, WP, onboard sensors, MPD,

Keyboard Unit (KU), and through the receipt of processed

• The aircraft’s ATHS - TACFIRE Net man-

TACFIRE messages. The TACFIRE pages are controlled

agement functionality is set, edited, and

by each independent crew station. When the ATHS page

controlled by the operator using the

button is selected from either crew station, the processed

ORIG ID page, NET page, and MODEM

TACFIRE format will be displayed on the MPD that re-

page.

quested the page. Following aircraft power - up, the initial

TACFIRE format in both crew stations will always be the

• The ATHS (TACFIRE) page should only

TACFIRE INDEX page. However, once the TACFIRE for-

be accessed for the purpose of sending

mat is changed in a specific crew station, the last dis-

and receiving TACFIRE messages or as

played format will always be displayed in that crew station

follows: 1) when operating with legacy

upon the next ATHS page button selection.

TACFIRE - only aircraft to check their SI-

TREP subscriber aircraft/weapons status

data; 2) when conducting single aircraft

The type 304 IDM is configured with Operational Flight

training and a different/net radio needs to

Program (OFP) software package Version 2, Revision 5

be set for receiving messages sent from/

(also referred to as 2.9I). This package consists of the

to the ownship; and 3) possible maintain-

Army User Interface (AUI) Computer Software Configura-

er requirements to view the IDM IP ad-

tion Item (CSCI) Version 2.9I and Modem CSCI Version

dress for loading purposes and to view a

R3.42. Together, they are identified by the Computer

detailed IDM listing of the various soft-

Program

Identification

Number

(CPIN):

ware and firmware module versions on

MD - 1295/A - 01A01 - U - V2.00(OFP.R5).

START (R2), RESET DATA> (R3), <SW -

VERS (L4) 1 / 4 pages.

In respect to the AH - 64D crew station implementation,

• Editing from the ATHS

(TACFIRE)

the terms Automatic Target Handover System (ATHS) and

START NET page (e.g., adding/removing

TACFIRE are used interchangeably. The ATHS page is

subscribers/members) will cause a data

accessed, for the purpose of sending or receiving TAC-

mismatch to occur between the aircraft

FIRE messages, by selecting the ATHS page button from

displays and the IDM which will invoke

the MSG REC page, MSG SEND page, RPT page, or by

the CLEAR button to display on the asso-

selecting the MSG RCV page’s RVW button when an

ciated COM page TACFIRE preset - net.

ATHS message is selected.

A subsequent selection of the CLEAR

button will send the DP data to the IDM,

The TACFIRE protocol incorporates two modes of opera-

overwriting any existing data for that pre-

tion: 1) AIR NET mode; and 2) TACFIRE (TFR) NET

set in the IDM.

mode. Both the AIR and TACFIRE modes are set anytime

• Following an aircraft startup, the initial

that a MODEM page BAUDRATE associated with the de-

sired mode is selected e.g., TACFIRE 1200 or AIR 1200.

displayed ATHS - TACFIRE format will al-

If a TACFIRE NET is to be used exclusively between IDM

ways be the INDEX page. After off - pag-

equipped aircraft, then AIR (default) NET mode should be

ing from an ATHS page format, the next

used. When communications will be established with the

selection of the ATHS page button will

artillery, legacy ATHS, or handheld DMD, then the TFR

display the last ATHS-TACFIRE page

NET mode should be selected. Differences in message

format that had previously been dis-

format and capabilities between the AIR and TFR modes

played in that crew station. Regardless of

exist.

what specific ATHS page is currently dis-

played, selecting the INDEX button will

command the INDEX page (top level

TACFIRE messages may be transmitted to and from other

ATHS page) to display.

TACFIRE capable aircraft, artillery TACFIRE/FIST ground

systems systems, DMD, and SINCGARS configured Por-

• A complete and detailed description of

table Flight Planning System - Army (PFPS - A) computer

the TACFIRE subsystem is described in

or AMPS computer.

Technical Bulletin 11 - 5895 - 1632 - 10.

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

3A-86

Change 3

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The IDM TACFIRE page format was designed to support

c. NET Page. Editing of a TACFIRE preset - net

any IDM aircraft inclusive of legacy non - 1553 bused and

members/subscribers or other data is accomplished

non - integrated aircraft. This means that the TACFIRE for-

through the COM Preset - Selected NET page and associ-

mat includes a number of pages that are not used by the

ated MODEM page. Data editing performed from the air-

AH - 64D crew member. This is particularly true with the

craft NET page will update the IDM; however, data editing

START pages. All TACFIRE NET management/editing

from the IDM (ATHS START NET page) will not usually

should be accomplished through the normal AH-64D

update the aircraft display. Refer to figure 3A-30 for all the

page and interfaces used for all the other IDM protocols.

button descriptions of the NET page.

a. DTU load and Manual Initialization. A TAC-

To enable the message send capability to any of a TAC-

FIRE preset - net is either initialized automatically through

FIRE preset - net members, they must first be assigned as

a DTU load or manually, through the same common

TM members, otherwise the IDM will not acknowledge

pages that are used with all the other IDM protocols; OR-

their presence and will not permit the entry of their sub-

IG ID page (fig 3A-86), COM preset NET page (fig 3A-87),

scriber/member ID for sending messages.

and NET MODEM page (fig 3A-88). An automatic initiali-

zation is contingent on a TACFIRE preset-net having

been constructed on the PFPS - A/AMPS and downloaded

to the DTC.

b. ORIG ID Page. Editing of the TACFIRE origina-

tor/ownship ID is accomplished from the ORIG ID page

and not from the ATHS (TACFIRE) START page. To setup

TM and BC ID, any one of the aircraft’s 8 preset - nets pro-

tocol has to be set as TACFIRE, has to contain the TM and

BC ID (just as a member), and TM and BC ID members

have to be set with an active TM member assignment. Re-

fer to figure 3A-10 for complete button descriptions of the

ORIG ID page.

LBA5230

Figure 3A-87. NET Page TACFIRE Protocol

d. MODEM Page. The MODEM page is used to set

all the TACFIRE protocol parameters required to commu-

nicate with an AIR net or TFR net. Refer to figure 3A-22

for all the button descriptions of the MODEM page.

The TACFIRE’s AIR (aircraft) or TFR (TACFIRE - artillery)

mode control is accomplished through the BAUD RATE

LBA5229A

button. To enable the AIR mode select an AIR baud rate

option (L1-L6), to enable the TACFIRE - Artillery mode se-

Figure 3A-86. ORIG ID Page TACFIRE Settings

lect a TACFIRE baud rate option (R1-R2) as required.

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

Change 3

3A-87

TM 1-1520-251-10

3A.71.4 Artillery TACFIRE Parameter Premission

Planning Considerations.

a. General. To increase the probability of success-

ful TACFIRE message exchanges with the artillery, the

observer/designator’s aircraft settings must be identical to

those used by AFATDS. It is also critical to ensure that the

FM1 or FM2 radio used with artillery TACFIRE messaging

is set to CIPHER. AFATDS requires CIPHER to enable its

automatic acknowledgement of an observer/designator’s

TACFIRE message. Without the receipt of machine

ACKS, the IDM could re - transmit multiple copies of the

same message and create duplicate missions. The com-

mon indication in the crew station of an incompatible

AFATDS setting, assuming the aircraft is within LOS, is

that the observer/designator’s platform will not display

ACKS.

b. AFATDS Pre - Mission Settings. The attack heli-

copter unit’s TOE or OPCON Fire Support Officer (FSO),

will normally be responsible for obtaining and distributing

LBA5231

the artillery’s TACFIRE configuration settings. The TAC-

FIRE data distributed by the FSO represent the configura-

tion settings of a specific Artillery unit’s Fire Direction Con-

Figure

3A-88.

MODEM Page TACFIRE Protocol

trol (FDC) and battery’s AFATDS devices.

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

3A-88

Change 3

TM 1-1520-251-10

NOTE

The unique artillery TACFIRE mode format for

the WEAPONS STATUS Page (for a SUB-

• All artillery TACFIRE operations must be

SCRIBER/MEMBER) and PRESENT POSI-

conducted over a secure (CIPHER) net to

TION STATUS Page (for a SUBSCRIBER/

enable AFATDS machine-ACK mes-

MEMBER) are automatically updated upon

sages.

receipt of a Situation/Status Report and will dis-

• The artillery’s TACFIRE net mode will

play the following mode unique format:

only support subscriber IDs that begin

with with a zero ( 0 - 9, 0 - Z).

a. The WEAPONS STATUS Page (for SUB-

• Prior to conducting TACFIRE operations

SCRIBER) for a TACFIRE (TFR) net contain

with the artillery, perform a voice commu-

only the two laser codes.

nications check with AFATDS and a

FREE TEXT message.

b. The PRESENT POSITION STATUS Page

c. AFATDS Mission Settings. The FDC’s AFATDS

(for SUBSCRIBER) for a TACFIRE (TFR)

has to include the TACFIRE compatible type device that

net contain only UTM and ALT. The SITREP

each of its subscribers are using loaded in its database.

is essentially a position report for the Artil-

AFATDS currently does not have an IDM type device set-

lery.

ting so they should assign the IDM platform as an ATHS

device. If they assign an IDM user as a FED type device

NOTE

the way that targets are recorded may become an issue.

AFATDS uses some different configuration and data han-

• The AFATDS SINCGARS-ICOM radio

dling techniques based on the device that it is communi-

datarate is set to a “TF” data rate while

cating with. If the observer is recorded as an ATHS type,

the aircraft SINCGARS data rate and

EOM RAT correctly causes the previously assigned target

mode is automatically set anytime that

number (e.g., AA2345) to be moved to a separate target

the TACFIRE preset - net MODEM BAU-

list for later reference called EOM RAT - T processing. If

DRATE is set to TACFIRE 1200.

the observer is recorded as a FED type, End Of Mission

Record as Target (EOM RAT) causes an incompatible as-

• Aircraft Error Control is automatically set

signment of a Known Point Number (K) called EOM

to EDC/TDC when a TACFIRE BAUD

RAT - K processing. The following parameters are com-

RATE is selected: the artillery may state

mon artillery TACFIRE (FED/ATHS) settings:

EDC/TDC as a value in pre - mission in-

structions.

NOTE

Information contained in parenthesis with an

AUTH (*AUTHENTICATION) - N/A Not in use.

asterisk (*) are the equivalent Field Artillery

AFATDS term translations for those used by

the IDM and aircraft.

BLOCK (*BLOCK MODE) - SINGLE.

1. TACFIRE preset - net FM1 or FM2 MODE - CI-

PHER (*SECURE) using a common CNV.

PREAMBLE (*KEY TIME) - 1.4 sec or as re-

quired. This may need to be increased to ensure

radio communications. Key times of less than

2. FM single channel frequency or SINCGARS

1.4 have occasionally caused AFATDS to re-

hopset (*NET ID) - set as required.

ceive duplicate transmissions from the ATHS

platform.

3. RETRIES - Select a low setting of 0 or 1.

4. MODEM page BAUD RATE (*DATA ENCOD-

MONITOR TIME (*NET ACCESS DELAY) is

ING) -select TACFIRE 1200 (*TFR or FSK

typically set at 1.0

1200). The artillery TACFIRE page format is

moded by the IDM whenever a TACFIRE baud

rate is selected from the MODEM page.

XMIT RADIO - TUNE FM1 or FM2 in CIPHER.

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

Change 3

3A-89

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3A.71.5 Air to Air TACFIRE Parameter Premission

3A.71.6

ATHS TACFIRE Operations.

Planning Considerations.

a. General. To increase the probability of success-

ful Air to Air TACFIRE message exchanges, all aircraft op-

erating on the same TACFIRE net should typically have

the same settings. The following settings are common

configuration settings:

TACFIRE preset - net FM1 or FM2 MODE - CI-

PHER (CNV1 - 6) or PLAIN - set as required.

RETRIES - Set as required.

MODEM page BAUD RATE and MODE. Typi-

cally, aircraft will utilize the AIR NET mode pa-

rameters by selecting a MODEM page BAUD

RATE of AIR 1200. Other optional selections in-

clude AIR 600, AIR 300, AIR 150, or AIR 75.

The unique AIR mode format for the WEAPONS

STATUS Page (for a SUBSCRIBER/MEMBER)

LBA5232

and PRESENT POSITION STATUS Page (for a

SUBSCRIBER/MEMBER) are automatically up-

dated upon receipt of a Situation/Status Report

Figure

3A-89.

ATHS Page TACFIRE Index Format

and will display the following mode unique for-

mat:

a. INDEX Page. A total of eight (8) separate sec-

tions may be accessed from the INDEX page. The 8 sec-

a. The WEAPONS STATUS Page (for SUB-

tions are displayed with associated line - keys, a series of

SCRIBER/MEMBER) for an AIR net con-

dashes, aligned with specific L1 - L4 or R1 - R4 MPD vari-

tains COD1 and COD2 (two laser codes),

able action buttons. The 8 sections and associated but-

ATGM, A/A, RKTS, and gun AMMO.

tons include:

b. The PRESENT POSITION STATUS Page

• L1

AIR MSNS

(for SUBSCRIBER/MEMBER) for an AIR

• L2

ARTY MSNS

net contain UTM, ALT, FUEL (fuel remain-

ing), and also TEAM and BC addresses.

• L3

MOVEMENT

• L4

REPORTS

AUTH - N/A Not in use.

• R1

RSVD MSGS

• R2

START

BLOCK - SINGLE.

• R3

STATUS

PREAMBLE - 1.4 sec or as required This may

• R4

MSGS/FTXT

need to be increased to ensure radio commu-

nications.

b. Common ATHS - TACFIRE Buttons. In addition

to the 8 line key sections three unique buttons are dis-

played on all the ATHS - TACFIRE pages.

MONITOR - is typically set at 1.0.

• T3

HFMSN

XMIT RADIO - TUNE radio as required: 1) VHF;

• T5

QUICK

of 2) UHF (HAVQUICK or SC); or 3) FM1/FM2

SINCGARS (hopset or SC).

• T6

INDEX

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

3A-90

Change 3

TM 1-1520-251-10

operator interface functionality of specific fields. When

manual entry of information is required, a greater than (>)

or less than (<) sign will appear which points away from

the associated line key to signify that operator input must

be made using the KU (the ENTER key is required). If only

limited choices are available and rapid selectivity is re-

quired, a caret (^) will be present beside the key field of

information pointing upward. Pressing this line key will

scroll through each available option. The “*” defines which

line is active for paging or keyboard data input. When the

crew selects a line for data entry but the MPD button se-

lected is not the current data entry line (does not display

an asterisk), the DP will output the appropriate keyboard

character to the TACFIRE until this line becomes the cur-

rent data entry line, as designated by the asterisk charac-

ter “*”. Once the current data entry line is detected, the DP

will then output the appropriate keyboard character to the

ATHS. A double pound sign (##) indicates a numeric entry

button. A double ampersand sign (@@) indicates alpha

character entry button.

LBA5233

3A.71.8 HFMSN Button (T3). When participating in a

shooter role, the HFMSN button (T3) is selected (boxed)

by the operator upon receipt of an AIR MSN message and

Figure

3A-89A.

ATHS - TACFIRE RCVD MSGS Page

deselected at other times.

c. ATHS - TACFIRE Advisories. The ATHS INDEX

3A.71.9 QUICK Button (T5). Selecting the QUICK but-

ton (T5) provides direct access to various previous/preset

page reserves the data area beneath the last two line keys

for ATHS-TACFIRE specific advisories. ATHS INDEX

messages. The QUICK button appears on all the ATHS -

page caution/advisories include:

TACFIRE pages and provides direct access to any one of

the following menu items:

• ATHS MESSAGE RECEIVED

• Summary Page of Highest Priority Received

• ATHS TABLE LOW (no longer used by the

Message.

artillery)

• Airborne Mission Summary Page.

• ATHS FAIL

• Artillery Mission Summary Page.

ATHS MESSAGE RECEIVED indicates that an ATHS -

TACFIRE message has been received. ATHS TABLE

• Mayday Message Summary Page.

LOW indicates the authentication tables have less than

• Quick Menu Page.

20 available lines remaining; however, the artillery no lon-

ger uses the table. ATHS FAIL indicates the IDM ATHS -

3A.71.10 INDEX Button (T6). Selecting the INDEX

TACFIRE component has failed.

button (T6) provides direct access to the ATHS - TACFIRE

INDEX page para 3A.71.6.

3A.71.7 General ATHS - TACFIRE Button Con-

trol. The TACFIRE message format Left and Right mo-

mentary buttons are displayed whenever the ATHS page

3A.71.11 SEND button (R5). Selecting the SEND but-

is selected. The selection of a TACFIRE Left or Right mo-

ton will transmit the selected TACFIRE message to the

mentary button initiates the requested TACFIRE format

subscriber/ member displayed within the subscriber data

paging, data entry, or other selection in accordance with

ID bloc adjacent to the L1 linekey. The SEND button is dis-

the current TACFIRE button option selection. The TAC-

played on any of the ATHS - TACFIRE pages where the

FIRE pages employs a set of ASCII characters to denote

destination subscriber data ID bloc is displayed.

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

Change 3

3A-91

TM 1-1520-251-10

NOTE

b. The ATHS (TACFIRE) START page (R2) should

only be accessed under the following conditions:

The START page button description is listed

out of sequential button order to facilitate

(1) When conducting single aircraft training and a

the contiguous description of all the ATHS -

different/net radio needs to set for receiving messages

TACFIRE message buttons, and to rein-

sent from/to the ownship.

force a systems ordered approach to how/

when AH-64D operators interface with

(2) Possible maintainer requirement to view the

ATHS - TACFIRE parameters.

IDM IP address for loading purposes and to view a de-

tailed IDM listing of the various software and firmware

3A.71.12 START PAGE Button - Description.

module versions on START (R2), RESET DATA> (R3),

<SW - VERS (L4) 1/4 pages.

NOTE

(3) If it is necessary to prepare/edit any of the six

• Do not use the START pages to perform

message preset selections or any of the six movement

TACFIRE NET management.

preset selections.

• The RESET line - key button should not

NOTE

be used if it is desired to maintain the TI

situational awareness icons.

When it is necessary to RESET the TAC-

FIRE resident data in the IDM, it is recom-

• The RESET line-key button will clear

mended to access the SET page and select

TACFIRE and Longbow ORIG ID, BC

the ZEROIZE button in place of accessing

and TM ID, remove TM status for mem-

the ATHS START page RESET button.

bers in a TACFIRE NET, and SA DATA.

These buttons support identical functional-

ity.

a. The ATHS - TACFIRE’s START page (R2) paging

structure is the sole means by which operators of non - in-

c. The START page RESET line - key button clears all

tegrated legacy aircraft edit TACFIRE ownship ID, BC/TM

data and table entries from the IDM ATHS-TACFIRE

ID, TACFIRE nets, and TACFIRE protocol parameters.

component and the Longbow ORIG ID. Following a REST,

AH - 64D operators should always utilize the same COM

any COM page preset TACFIRE net will have to be se-

subpages that are used to manage all the other digital pro-

lected and any pertinent members will have to be redesig-

tocols when working with the TACFIRE protocol.

nated as TM members following a ZEROIZE.

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

3A-92

Change 3

TM 1-1520-251-10

3A.71.13 AIR MSNS Page (INDEX Page L1). The AIR

to which request was sent, and mission status in line with

MSN LIST page is displayed upon selecting the AIR

the mission number (1 - 8). Stepping through the air re-

MSNS button (L1) from the INDEX page (figure 3A-89).

quest list is accomplished by pressing the R1 key on the

The AIR MSN LIST page is capable of storing eight spe-

MFD. The following mission command and status entries

cific AIR (fire) MISSION requests in the IDM. To request

may be displayed.

and respond to airborne fire missions. NEW air or HELL-

• R2 - R4

XXXX or XN/G (3 pages).

FIRE missions may be defined or existing missions modi-

fied through the AIR MSN (REQUEST) LIST pages.

Pressing the right line keys adjacent to NEW accesses the

AIR MISSION TYPE page for initiating new STANDARD

or HELLFIRE air mission requests.

3A.71.14 AIR MSN TYPE Page.

LBA5234

Figure 3A-89B. AIR MSN (REQUEST) LIST Page

AIR MSN LIST selections include:

LBA5235

• L2 - L4

XXXX or #N/G (3 pages).

Figure 3A-89C. AIR MSN TYPE Page

Pressing the left line keys adjacent to the desired mission

number LIST pages accesses the previously established

Fire mission selections include:

air mission request pages. Upon selection, complete mis-

sion request information is displayed. #N/G represents

• L2

REMOTE HELLFIRE (para. 3A.71.24).

#NOT/GIVEN where there is no previous data entered.

• L3

AMC ORDNANCE (para. 3A.71.25).

• R1

1/3 to 3/3 (3 pages).

• L4

WR ORDNANCE (para. 3A.71.26).

• R3

AMC TARGET (para. 3A.71.27).

The three AIR MSN (REQUEST) LIST pages 1/3 through

3/3 display mission command, firing element (subscriber)

• R4

WR TARGET (para. 3A.71.28).

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

Change 3

3A-93

TM 1-1520-251-10

3A.71.15 ARTY MSNS Page (INDEX Page L2). The

3A.71.16 ARTY MSN TYPE Page. The ARTY MSN

ARTY MSN LIST page is displayed upon selecting the

TYPE page is displayed upon selecting either of the

ARTY MSNS button (L2) from the INDEX page (figure

ARTY MSN LIST pages FMTD NEW buttons.

3A-89). ARTY MSN LIST page enables observer/desig-

nators to request and respond to artillery fire missions.

Supports 2 preplanned (preformatted) artillery missions, 2

new artillery missions, and allows the modification of ex-

isting missions. Artillery mission data is formatted to be

consistent with the artillery FDC and forward observer

DMD.

LBA5237

Figure 3A-89E. ARTY MSN TYPE Page

ARTY MSN TYPE page buttons include:

• L2

NEW TGT (new target) - The Observer

defines the Target type and the strength

for a new Target.

• L3

KNPT TGT (Known Point target) - A

LBA5236

location previously identified and num -

bered, known both to the requester and

to the artillery FDC. The requester then

Figure 3A-89D. ARTY MSN LIST Page

provides the Target type and strength.

• L4

QUICK (quick fire) - The requester

enters only a Known Point or a Target

Number. All other data is known by the

ARTY MSN LIST page buttons include:

artillery FDC. (Target Number is the

preferred method).

• L2

M1 RQST - Preplanned mission #1.

• R2

REQ PPLN (preplan) - The Observer

• L3

M2 RSST - Preplanned mission #2.

provides the type of fire request either

FPF or CPHD guided munitions. Only

• L4

PPLN LIST - Accesses the preplaned

one FPF can be preplanned at a time;

list.

however, both preplanned missions can

• R2

FMTD NEW - Opens ARTY MSN TYPE

be CPHD. The requester then provides

page (figure 3A-89E).

the Target position.

• R4

CPHD (COPPERHEAD) - The Target

• R3

FMTD NEW - Opens ARTY MSN TYPE

position is defined as NEW TGT or

page (figure 3A-89E).

KNPT and Known Point number is

• R3

FMTD NEW - New ARTY mission.

provided to the firing element.

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

3A-94

Change 3

TM 1-1520-251-10

3A.71.17 MOVEMENT Page (INDEX L3). The MOVE-

MENT page is displayed upon selecting the MOVEMENT

button (L3) from the INDEX page (figure 3A-89). Allows

position instructions to be given without the use of voice

communications.

LBA5239

Figure 3A-89G. REPORTS Page

REPORTS page button options are:

LBA5238

• L2

SIT/STATUS (Situation/Status) - States

Figure 3A-89F. MOVEMENT Page

the operator’s own situation and status.

• L3

SPOT (Positive Spot) - Reports target

MOVEMENT page button options are:

activity.

• L2

MOVE TO.

• L4

ATI (Artillery Target Intelligence) - Pro -

• L3

HOLD AT.

vides intelligence to artillery units.

• L4

RDZV (rendezvous) AT.

• R1

BDA (Battle Damage Assessment) -

• R2

MOVING TO.

Provides battle damage assessment to

• R3

HLDG (holding) AT.

artillery or AIR MSN controlling units.

Selecting any of the MOVEMENT page options will dis-

• R2

CAS (Casualty) - Provides casualty

report capability.

play 3 movement destination/location options:

• R3

NEG SPOT (Negative Spot) - Provides

• L2

PRESET - Permits selection of any six

no target activity.

preset positions.

• R4

REQUEST REPORT - Requests reports

• L3

MY POSITION - Enables automatic

from destination net subscriber/members.

transmission of own current position.

The following reports may be requested

• L4

OTHER - Enables freetext communica-

from other subscriber/members.

tions.

• L2

SIT/STATUS (Situation/Status).

3A.71.18 REPORTS Page (INDEX L4). The RE-

PORTS page is displayed upon selecting the REPORTS

• L3

SPOT (Spotter).

button (L4) from the INDEX page (figure 3A-89). Permits

• R2

BDA (Battle Damage Assessment).

the ownship to provide information to both team and

• R3

CAS (Casualty).

broadcast net members. The following reports are se-

lectable from the REPORT TYPE SELECT page.

• R4

POS UPDT (Automatic Position Update).

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

Change 3

3A-95

TM 1-1520-251-10

3A.71.19 RCVD MSGS Page (INDEX R1). The RCVD

MSGS page is accessed by selecting either the RCVD

MSGS button (R1) from the INDEX page (fig 3A-89) or the

MSG RCV page RVW button when an ATHS MSG (TAC-

FIRE) message is selected.

LBA5241

Figure 3A-89I. STATUS Page

Status page button option buttons:

• L1

OWN WPNS - WEAPONS STATUS

LBA5240

page (for OWN) containing information

of own weapons stores.

Figure 3A-89H. RCVD MSGS Page

• L2

OWN PPSN - PRESENT POSITION

STATUS page (for OWN) containing

information on own position, altitude,

The RCVD MSGS page allows the operator to:

fuel status, and current team and broad-

cast addresses.

• R1

1/1 - X/16 - Access the message page

listing (up to 16 pages).

• L3

SUBS WPNS - WEAPONS STATUS

page (for SUBSCRIBER). There is a

• L1 - L3

Review newly received messages.

separate WEAPONS STATUS page (for

• L1 - L3

Review previously retained messages

SUBSCRIBER) for each defined sub -

(12 - 48 = 12 for each TACFIRE radio).

scriber in the net.

• L1 - L3

Delete messages no longer needed.

• L4

SUBS STATUS - PRESENT POSI -

TION STATUS page (for SUBSCRIB-

Received messages review pages displaying DEL or DE-

ER). There is a separate PRESENT

LETE next to a line key may be deleted from the page

POSITION STATUS page (for SUB -

where they are reviewed.

SCRIBER) for each defined subscriber

in the net.

3A.71.20 STATUS Page (INDEX R3). The STATUS

• R1

SELECT - STATUS SUBSCRIBER

page is displayed upon selecting the STATUS button (R3)

SELECT page. This page permits the

from the INDEX page (fig 3A-89). Displays OWN (OWN-

operator to access position and weap -

SHIP) WPNS and PPSN data that is sent with the sending

ons status information from a particular

of a SITREP from the OWNSHIP and displays the SUBS

subscriber, rather than stepping through

(Subscriber/member) WPNS and STATUS when SI-

the status of all defined subscribers in

TREPS have been received.

listed order.

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

3A-96

Change 3

TM 1-1520-251-10

• R3

XX - FAT<* - Displays the free air tem -

perature (FAT) ( - 43 to 80 degrees C).

Enters the FAT.

All subscriber data will be displayed using one of two for-

mats: 1) AIR; or 2) TACFIRE (TFR). The WEAPONS STA-

TUS page (for SUBSCRIBER) and PRESENT POSITION

STATUS page (for SUBSCRIBER) are different depend-

ing upon whether the subscriber is defined in an AIR or a

TACFIRE (TFR) format type. The formats are automati-

cally set in association with the MODEM page BAUD

RATE type selection: an AIR baud rate e.g., AIR 1200,

sets the AIR format; and A TACFIRE format e.g., TAC-

FIRE 1200, sets the TACFIRE format.

The WEAPONS STATUS page (for SUBSCRIBER) for an

AIR baud rate net contains COD1 and COD2 (two laser

LBA5242

codes), ATGM, A/A, RKTS, and gun AMMO. The WEAP-

Figure 3A-89J. MSGS/FTXT (MESSAGE TYPES)

ONS STATUS page (for SUBSCRIBER) for a TACFIRE

Page

(TFR) baud rate net contain only the two laser codes.

MSGS/FTXT page (MESSAGE TYPES) button options in-

clude:

• L1

FREETEXT

The PRESENT POSITION STATUS page (for SUB-

• L2

MSG PRESETS

SCRIBER) for an AIR net contain UTM, ALT, FUEL (fuel

remaining), and also TEAM and BC addresses.

• L3

CHECK FIRE

• R2

MAYDAY

• R3

AUTH (authentication)

• R4

CANCKF (CANCEL CHECK FIRE)

The PRESENT POSITION STATUS page (for SUB-

3A.71.22 Air and Artillery Message Sets. The Air

SCRIBER) for a TACFIRE (TFR) baud rate net contain

mode net of TACFIRE and the Artillery mode net of

only UTM and ALT. The SITREP is used as a PP report

TACFIRE supports different message sets. For Air

with the artillery.

and Artillery message capability (refer to table

3A-4E). When sent to AFATDS, some of the message

types will respond with an ACK even though nothing is ac-

tually received and displayed by AFATDS. A message

3A.71.21 MSGS/FTXT Page (INDEX R4). Permits the

such as a SITREP request will not provide an ACK. The

operator to compose and transmit any preset/free text

STATUS page has to be accessed to determine the re-

message up to 35 characters at a time.

sponse by checking subscriber / member data.

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

Change 3

3A-97

TM 1-1520-251-10

Table 3A-4E. Air and TACFIRE mode message compatibility

MSGS/FTXT

Type

Receive an

Received by

Remarks

AFATDS ACK

AFATDS

FREE TEXT

Yes

Air and Artillery

MSG PRESETS

Yes

Air and Artillery

CHECKFIRE

Yes

Send Checkfire by voice (known issue)

MAYDAY

Air only

AUTH

N/A

Message format no longer used

CANCKF

Yes

Automatically processed by AFATDS

REPORTS

Type

Receive an

Received by

Remarks

AFATDS

SIT/SAT

Yes

Air and Artillery. Automatically updates location; however, in the

artillery TAC FIRE mode fuel, laser code, and ammo are not

updated as they are in AIR mode.

SPOT REPORT

Yes

Air only (arty ACK but no msg receipt)

ARTY

Yes

Artillery only. No message is generated - - target goes into the

AFATDS suspect target list

BDA/CAS

Yes

Air only (or as part of Artillery thread)

NEG SPOT

Yes

Air only (arty ACK but no msg receipt)

REQUEST

Air only (arty ACK but no msg receipt)

MOVEMENT

Type

Receive an

Received by

Remarks

AFATDS ACK

AFATDS

MOVE TO

Air only

HOLD AT

Air only

RDZV AT

Air only

MOVING TO

Air only

HOLD AT

Air only

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

3A-98

Change 3

TM 1-1520-251-10

3A.71.23 Target/Position Buffer Coordinate Auto-

3A.71.24 Remote HELLFIRE (Aircraft Remote HELL-

fill. A number of AIR and ARTY messages allow the op-

FIRE Mission).

erator to automatically populate target and other coordi-

nate data into a message. This is normally accomplished

OBSERVER/DESIGNATOR: (REMOTE HELLFIRE).

using the TSD page and the CAQing of any WPTHZ,

CTRLM, or TGT/THRT. Following a SET page ZEROIZE

Locate target using aircraft sensors and use

or an ATHS START page “RESET“ the applicable TAC-

TSD CAQ as necessary for automatic entry of

FIRE message coordinates will not contain any displayed

target coordinates.

values until the operator provides them. A new feature im-

plemented for non - integrated platforms, referred to as the

ATHS page (B4) - Select as required.

Common Target Position Buffer (CTPB), will often require

INDEX button (T5) - Select as required.

AH - 64D operators to select the 2.9I TACFIRE UPD GRD

(UPDATE GRID) button (R4) to overwrite an existing

Select AIR MSNS.

coordinate value. The UPD GRD button has to be se-

lected, anytime that a valid grid coordinate is displayed in

Select Mission 1 on AIR REQ List Pages 1/3 by

the grid reference component of an applicable message.

pressing NEW. (fig 3A-89B).

On MSN TYPE Page - Select REMOTE HELL-

NOTE

FIRE.

• If an existing coordinate will not permit an

AUTO UPDATE with CAQing, select the

On AIR MISSION SUMMARY page.

2.9I TACFIRE UPD GRD (UPDATE GRID)

button (R4) where displayed on the various

a. Evaluate/set coordinates (R4) as required.

coordinate pages (the REMOTE HELL-

b. Evaluate/set Target Type (R3) as required.

FIRE page does not support this feature).

c. Evaluate/set Target Activity (R4) as re-

The reports and missions that use the Target/Position

quired.

Buffer coordinate autofill fields are:

d. Press R2 to access AIR CONTROL SUM-

• AIR MISSION (Target Position)

MARY page.

• AIRBORNE SPOT REPORT (Target Position)

On AIR CONTROL SUMMARY page.

• AIRBORNE NEGATIVE SPOT REPORT (Report

a. Evaluate MST (L1) for multiple missiles.

Position, only on operator initiated CAQ, initially

set to OWN Present Position)

b. Evaluate/set Laser Code/Rounds (L3) - as

required.

• AIRBORNE CAS REPORT (Report Position only

on operator initiated CAQ, initially set to OWN

c. Review/set MSL TRAJ (R2) as required.

Present Position)

d. Press R1 to access AIR MISSION SUMMA-

• AIRBORNE BDA REPORT (Report Position)

RY page.

• ARTILLERY (ATI) REPORT (Target Position)

Evaluate/set DEST SUB ID as required.

• ARTILLERY MISSION - Request Phase (Target

10.

Press SEND to request mission.

Position)

NOTE

• ARTILLERY MISSION - Shift Phase, if needed

(Round Position)

• At this point the Observer waits for the

Shooter to send an ACCEPTED mes-

sage.

The Subscriber IDs beginning with a zero (0) are required

for communication with older devices and net specifica-

• This process begins with a RECEIVED

tions especially those using the Artillery TFR net type.

MESSAGE message.

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

Change 3

3A-99

TM 1-1520-251-10

SHOOTER: (REMOTE HELLFIRE).

In addition to displaying the HELLFIRE symbol modifier

around T52, the selection of the HFMSN button will au-

tomatically code the requested missiles and set the fre-

11.

Receive message.

quencies. The Launcher must then verify the D (LDA)

and S (SEP) angle. The LDA is the laser designation

angle and is the area in front of the launching aircraft

a. MSG RCV page, ATHS MSG select, RVW

that the designating aircraft should avoid. This angle is

button select (will automatically open the

+/- 30 degrees of the launcher gun-target line and will

TACFIRE RCVD MSGS page).

flash at 30 degrees or greater. The S (Separation)

angle is +/- 60 degrees from the target back towards

- or -

the designator aircraft. This is the angle that the desig-

nator should be inside to preclude a missile miss due to

laser angle to the missile. The SEP angle will flash

b. Select ATHS button and INDEX button to

when the angle is greater than 60 degrees. The launch-

access IDM Top Menu page.

er should verify that the target is within range. The

bearing to the target is relative to the launcher in this

12.

Select RCVD MSGS as required.

case and the > indicates the closest direction to turn,

with the amount of degrees required, to the target.

Range and bearing are displayed appropriately for the

13.

To review selected message, press the corre-

aircraft location (launcher and designator). The launch-

sponding LEFT key.

er selects R1 to access page 2/3.

20. Press SEND.

14.

Review/change information on AIR MISSION

SUMMARY page.

NOTE

At this point the Shooter waits for the Ob-

15.

Review/change information on AIR CONTROL

server to send a FIRE message or CHECK

SUMMARY page.

FIRE message.

OBSERVER/DESIGNATOR: (REMOTE HELLFIRE)

16.

Select HFMSN button (T3) - evaluate target

Steps 21 through 28 are CHCKFIRE control procedures.

location with AIR MSN symbol modifier dis-

played around T52 and note that HF missile la-

21. On the OBSERVER: press C: (L2) to access

ser codes have auto - moded or are set as re-

command select page.

quired.

22. Select CHECK FIRE anytime that an operation-

al or safety requirement exists to halt the prog-

17.

Verify Mission Command is ACCEPT or as re-

ress of the mission.

quired on AIR MISSION SUMMARY page. If de-

nied/aborted, the thread will stop upon SEND.

23. Press SEND.

24. Verify receipt by Shooter.

18.

Press SEND.

25. Press C: (L2) to access command select page.

When the situation dictates a need to continue

NOTE

with the progress of the mission or end a mis-

sion.

Upon receipt of the ACCPT, the Observer

waits for the Shooter to send a READY

26. Select CANCKF or END MSN as required.

message.

27. Press SEND.

SHOOTER: (REMOTE HELLFIRE).

28. Verify receipt by Shooter.

NOTE

19. Verify Mission Command is READY on AIR

MISSION SUMMARY page.

If END MSN sent, the thread stops here.

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

3A-100

Change 3

TM 1-1520-251-10

SHOOTER: (REMOTE HELLFIRE).

3A.71.25 AMC ORDNANCE (Air Request - At My

Command Ordnance).

29. Shooter selects READY (AGAIN) and sends.

OBSERVER/DESIGNATOR: (AMC ORDNANCE).

OBSERVER/DESIGNATOR: (REMOTE HELLFIRE).

Locate target using aircraft sensors and use

Upon receipt of the READY message, perform the following:

TSD CAQ as necessary for automatic entry of

target coordinates.

30. Verify Mission Command is FIRE on AIR MIS-

SION SUMMARY page.

ATHS page (B4) - Select as required.

31. Press SEND.

INDEX button (T5) - Select as required.

32. Press (R2) to access the AIR CONTROL SUM-

Select AIR MSNS.

MARY page. Remain on this page to monitor

Time - of - Flight countdown.

On AIR REQUEST List page - Select from Mis-

sion 1 through 8 on AIR REQ List pages 1/3 - 3/3

At this point the Observer waits for the Shooter to send a

by pressing NEW.

SHOT message.

On MSN TYPE page - Select AMC ORD.

SHOOTER: (REMOTE HELLFIRE).

Select Ordnance Type.

33. Verify Mission Command is SHOT on AIR MIS-

Select Ordnance Type.

SION SUMMARY page.

On AIR MISSION SUMMARY page.

34. Press SEND.

a. Evaluate/set Ordnance Type (L3) as re-

35. UPON machine ACK receipt - FIRE missile(s).

quired.

At this point the Shooter waits for the Observer to send an

b. Evaluate/set target coordinates (L4) as re-

EOM message.

quired.

OBSERVER/DESIGNATOR: (REMOTE HELLFIRE).

c. Evaluate Fire Control.

NOTE

d. Evaluate/set DEST SUB ID as required.

Upon receipt of a SHOT message the mis-

e. Evaluate/set Target Description as required.

sile is in the air the Observer performs laser

operations as required using the time of

f. Evaluate/set Target Activity as required.

flight countdown.

g. Press SEND to request mission.

36. Return to AIR MISSION SUMMARY page.

NOTE

37. Select CMD (R2).

At this point the Observer waits for the

38. Select END MSN.

Shooter to send an ACCEPTED message.

SHOOTER: (AMC ORDNANCE).

39. Press SEND.

NOTE

SHOOTER: (REMOTE HELLFIRE).

This process begins with a RECEIVED

40. HFMSN button (T3) deselect. HELLFIRE mis-

MESSAGE.

sile settings will mode back to the original set-

tings and the AIR MSN symbol modifier is re-

10. Select IDM/INDEX switch to access IDM Top

moved from the display.

Menu page.

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

Change 3

3A-100.1

TM 1-1520-251-10

11.

Receive message.

NOTE

At this point the Observer waits for the

a. MSG RCV page, ATHS MSG select, RVW

Shooter to send a SHOT message.

button select (will automatically open the

TACFIRE RCVD MSGS page).

SHOOTER: (AMC ORDNANCE).

- or -

22. Verify Mission Command is SHOT on AIR MIS-

SION SUMMARY page.

b. Select ATHS button and INDEX button to

23. Press SEND.

access IDM Top Menu page.

24. UPON machine ACK receipt - FIRE the ord-

12.

Select RCVD MSGS as required.

nance.

13.

To review a selected message - Press the cor-

NOTE

responding LEFT key.

At this point the Shooter waits for the Ob-

server to send a EOM message.

14.

Review/change information on AIR MISSION

SUMMARY page. Verify Mission Command is

OBSERVER/DESIGNATOR: (AMC ORDNANCE).

ACCEPT.

25. Select CMD (R2).

15.

Select HFMSN button (T3) - evaluate target

location with AIR MSN symbol modifier dis-

26. Select EOM.

played around T52.

27. Press SEND.

16.

Press SEND.

3A.71.26 WR ORDNANCE (Air Request When Ready

Ordnance).

NOTE

At this point the Observer waits for the

OBSERVER: (WR ORDNANCE).

Shooter to send a READY message.

1. TSD CAQ as necessary for automatic entry of

target coordinates.

SHOOTER: (AMC ORDNANCE).

2. ATHS page (B4) - Select as required.

17. Complete fire position preparation.

3. INDEX button (T5) - Select as required.

18. Verify Mission Command is READY on AIR

MISSION SUMMARY page.

4. Select AIR MSNS.

5. On AIR REQUEST List page - Select from Mis-

19. Press SEND.

sion 1 through 8 on AIR REQ List pages 1/3 - 3/3

by pressing NEW.

NOTE

At this point the Shooter waits for the Ob-

6. On MSN TYPE page - Select WR ORD.

server to send a FIRE message.

7. Select Ordnance Type. [HE]

OBSERVER/DESIGNATOR: (AMC ORDNANCE).

8. On AIR MISSION SUMMARY page.

20. Verify Mission Command is FIRE on AIR MIS-

a. Evaluate/set Ordnance Type (L3).

SION SUMMARY page.

b. Evaluate/set target coordinates

(L4).

21. Press SEND.

[POINT 2]

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

3A-100.2

Change 3

TM 1-1520-251-10

c. Review Fire Control.

SHOOTER: (WR ORDNANCE).

d. Evaluate/set DEST SUB ID.

18. Verify Mission Command is SHOT on AIR MIS-

SION SUMMARY page.

e. Evaluate/set Target Description.

19. Press SEND.

f. Evaluate/set Target Activity.

20. Press SEND. At this point the Shooter waits for

9. Press SEND to request mission.

the Observer to send an EOM message.

NOTE

OBSERVER: (WR ORDNANCE).

At this point the Observer waits for the

Shooter to send an ACCEPTED message.

21. Select CMD (R2).

SHOOTER: (WR ORDNANCE).

22. Select EOM.

NOTE

23. Press SEND.

This process begins with a RECEIVED

3A.71.27 AMC TARGET (Air Request - At My Com-

MESSAGE.

mand Target).

10.

Select IDM/INDEX switch to access IDM Top

OBSERVER: (AMC TARGET).

Menu page.

11.

Receive Message.

Locate target using aircraft sensors and use

TSD CAQ as necessary for automatic entry of

a. MSG RCV page, ATHS MSG select, RVW

target coordinates.

button select (will automatically open the

TACFIRE RCVD MSGS page).

ATHS page (B4) - Select as required.

- or -

INDEX button (T5) - Select as required.

b. Select ATHS button and INDEX button to

Select AIR MSNS.

access IDM Top Menu page.

On AIR REQUEST List page - Select MISSION

12.

Select RCVD MSGS as required.

1 on AIR REQ List pages 1/3 by pressing NEW.

13.

To review a selected message - Press the cor-

On MSN TYPE page - Select AMC TGT.

responding LEFT key.

On AIR MISSION SUMMARY page.

14.

Review/change information on AIR MISSION

SUMMARY page. Verify Mission Command is

a. Change Ordnance Type (L3). [HE]

ACCEPT.

b. Change target coordinates (L4). [POINT 5]

15.

Press SEND.

c. Review Fire Control.

NOTE

d. Review/change DEST SUB ID.

At this point the Observer waits for the

Shooter to send a READY message.

e. Review/change Target Description. [BUILD-

ING]

SHOOTER: (WR ORDNANCE).

16. Verify Mission Command is READY.

f. Review/change Target Activity.

[STA-

TIONARY]

17. Shooter will shoot when ready and send a

SHOT message.

Press SEND to request mission.

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

Change 3

3A-100.3

TM 1-1520-251-10

NOTE

At this point the Observer waits for the

Shooter to send an ACCEPTED message.

Shooter to send a SHOT message.

SHOOTER: (AMC TARGET).

NOTE

19. Verify Mission Command is SHOT on AIR MIS-

This process begins with a RECEIVED

SION SUMMARY page.

MESSAGE.

20. Press SEND.

9. Select IDM/INDEX switch to access IDM Top

Menu page.

21. UPON machine ACK receipt - FIRE the ord-

nance.

10. Receive Message.

NOTE

a. MSG RCV page, ATHS MSG select, RVW

button select (will automatically open the

At this point the Shooter waits for the Ob-

TACFIRE RCVD MSGS page).

server to send an EOM message.

- or -

OBSERVER: (AMC TARGET).

b. Select ATHS button and INDEX button to

22. Select CMD (R2).

access IDM Top Menu page.

23. Select EOM.

11. Select RCVD MSGS as required.

24. Press SEND.

12. To review a selected message - Press the cor-

responding LEFT key.

3A.71.28 WR TARGET (Air Request - When Ready

Target).

13. Review/change information on AIR MISSION

SUMMARY page. Verify Mission Command is

OBSERVER: (WR TARGET).

ACCEPT.

1. Select IDM/INDEX switch to access IDM Top

14. Press SEND.

Menu page.

NOTE

2. Select AIR MSNS.

At this point the Observer waits for the

Shooter to send a READY message.

3. On AIR REQUEST List page - Select from Mis-

sion 1 through 8 on AIR REQ List pages 1/3 - 3/3

SHOOTER: (AMC TARGET).

by pressing NEW.

15. Verify Mission Command is READY on AIR

MISSION SUMMARY page.

4. On MSN TYPE page - Select WR TGT.

16. Press SEND.

5. On AIR MISSION SUMMARY page.

NOTE

a. Change Ordnance Type (L3). [HE]

At this point the Shooter waits for the Ob-

b. Change target coordinates (L4). [POINT 4]

server to send a FIRE message.

c. Review Fire Control.

OBSERVER: (AMC TARGET).

17. Verify Mission Command is FIRE on AIR MIS-

d. Review/change DEST SUB ID.

SION SUMMARY page.

e. Review/change Target Description. [AIR-

18. Press SEND.

CRAFT]

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

3A-100.4

Change 3

TM 1-1520-251-10

f. Review/change Target Activity.

[STA-

16. FIRE ordnance once Machine ACK received

TIONARY]

At this point the Shooter waits for the Ob-

server to send an EOM message.

6. Press SEND to request mission.

OBSERVER: (WR TARGET).

NOTE

17. Select CMD (R2).

At this point the Observer waits for the

Shooter to send an ACCEPTED message.

18. Select EOM.

SHOOTER: (WR TARGET).

19. Press SEND.

3A.71.29 ARTILLERY REQUEST (FIRE REQUEST

NOTE

Grid/FR Grid).

This process begins with a RECEIVED

MESSAGE message.

NOTE

AFATDS actions are not shown.

7. Select IDM/INDEX switch to access IDM Top

Menu page.

Locate target using aircraft sensors and use

TSD CAQ as necessary for automatic entry of

8. Select RCVD MSGS.

target coordinates.

ATHS page (B4) - Select as required.

9. To review a selected message - Press the cor-

responding LEFT key.

INDEX button (T5) - Select as required.

10. Review/change information on AIR MISSION

Select ARTY MSNS button (L2) to access Artil-

SUMMARY page. Verify Mission Command is

lery Mission pages.

ACCEPT.

Select NEW button (R2) or (R3) as desired (will

11. Press SEND.

replace any mission in M1 or M2 Respectively).

At this point the Observer waits for the

Select NEW TGT (L2) as Mission Type.

Shooter to send a READY message.

Review/change the Mission Summary page op-

SHOOTER: (WR TARGET).

tions as required.

12. Verify Mission Command is READY on AIR

a. Review/change Fire Control page options>

MISSION SUMMARY page.

(R2) as required. Options include:

(1) TGT (L1) - Enter assigned number e.g.

13. Press SEND.

[AA5025], as required.

NOTE

(2) CONT (L2) - Select/set FIRE CON-

At this point the Shooter will shoot when

TROL method as required.

ready and send a SHOT message.

(3) PRI (L3) - Select/set PRIORITY as re-

quired.

SHOOTER: (WR TARGET).

(4) SH/FZ (L4) - Select/set SHELL/FUZE

14. Verify Mission Command is SHOT on AIR MIS-

as required.

SION SUMMARY page.

(5) ROUND OBSERVATION^ (R2) - Se-

15. Press SEND.

lect/set Round Observation as required.

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

Change 3

3A-100.5

TM 1-1520-251-10

(6) ANG (R3) - Select/set ANGLE as re-

NOTE

quired.

If a check fire is required to be issued during

the progress of the mission send the check

(7) Press 1/1 (R1) to access Summary

fire order by voice, the AFATDS has a

page.

known issue with the 2.9I TACFIRE check

fire message.

b. TGT> (R3), review/change Target Descrip-

10. Status (L3) will change to SHOT when fired.

tion as required.

11. Status (L3) will change to SPLSH for impact

warning (if requested).

c. TGT Location> (R4), review/change as re-

quired, Target Location page options in-

12. Status (L3) will change to RDCPL for rounds

clude:

complete (as appropriate).

13. To end mission w/disposition, casualties as fol-

(1) Review/change Target by manual entry.

lows:

(2) Review TGT BRG.

a. Select (L2), then select EOM RAT.

b. Select DISPO/CAS (L4), then select and set

NOTE

as required.

If the altitude data autofill is not present (e.g.

c. Select CAS (L2) and set as required.

no DTED data not available), a four digit op-

erator data entry is required for the altitude

14. Press SEND.

field (inclusive of leading zeros) before the

entry will be accepted. During testing, an in-

3A.71.30 ARTILLERY REQUEST (Time On Target).

consistency has been noted where the

NOTE

same altitude entered at different times re-

quired different amounts of leading zeros.

AFATDS actions are not shown. All times

The number of leading zeros that the alti-

are Zulu Time.

tude field requires varies from 3 to 6 and

does not appear to have a definite pattern.

1. Locate target using aircraft sensors and use

TSD CAQ as necessary for automatic entry of

target coordinates.

(3) Review ALT.

2. ATHS page (B4) - Select as required.

3. INDEX button (T5) - Select as required.

(4) Review/change DEG/MILS.

4. Select ARTY MSNS (L2) to access Artillery Mis-

(5) Review/Change SQ.

sion pages.

5. Select NEW button (R2) or (R3) as desired (will

(6) Press 1/1 (R1) to access Mission Sum-

replace replace any mission in M1 or M2 Re-

mary page.

spectively).

6. Select NEW TGT (L2) as Mission Type.

d. Verify/Set correct Destination SUB address

(L1).

7. Review/change the Mission Summary page as

required for TOT options:

8. Press SEND (R4) to request mission.

a. Select <FIRE CONTROL button (L2) - and

select the TOT button (T2). The page will

9. Status (L3) will change to ACPTD when MTO is

mode back and the <FIRE CONTROL will

received. Review MTO (R2) as needed.

also display TOT.

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

3A-100.6

Change 4

TM 1-1520-251-10

b. Enter Time On Target as required e.g.,

13. Status (L3) will change to RDCPL for rounds

[ZULU + 5 MIN].

complete (as appropriate).

3A.71.31 FIRE MISSION REQUEST (FR with AUTO

c. Review/change Target Description (R3).

CALC Shift).

Locate target using aircraft sensors and use

d. Review/change Target Location page (R4).

TSD CAQ as necessary for automatic entry of

target coordinates.

e. Verify/set Destination SUB L1 ID.

ATHS page (B4) - Select as required.

INDEX button (T5) - Select as required.

f. Press SEND to transmit TOT Freetext Mes-

sage.

Select ARTY MSNS (L2) to access Artillery Mis-

sion pages.

Review/change the Mission Summary page as

required (L2).

Select NEW button (R2) or (R3) as desired (will

replace replace any mission in M1 or M2 Re-

spectively).

a. On Mission Command page select - RQST.

Select NEW TGT (L2) as Mission Type.

b. Review/change Fire Control.

Review/change the Mission Summary page as

required.

(1) CONT - Select TOT.

Review/change Fire Control by pressing

(R2).

(2) PRI - Select [NORMAL].

(1) TGT - Enter assigned number (if re-

quired).

(3) SH/FZ - Select [NO PREF].

(2) CONT - Verify/Set as required.

(4) R2 - Select Round Observation [OK].

(3) PRI - Verify/Set as required.

(4) SH/FZ - Verify/Set as required.

(5) ANG - Select [LO].

(5)

(R2) - Verify/Set Round Observation as

required [OK].

(6) Press 1/1 (R1) to access Summary

page.

(6) ANG (R3)- Select as required [LO].

(7) Press 1/1 (R1) to access Summary

Press SEND to request mission.

page.

Review/change Target Description as re-

10.

Status (L3) will change to ACPTD when MTO is

quired.

received. Review MTO (R2) as needed.

Review/change Target Location page press-

11.

Status (L3) will change to SHOT when fired.

ing (R4). On Target Location page.

(1) Review/change Target Location.

12.

Status (L3) will change to SPLSH for impact

warning (if requested).

(2) Review/change TGT BRG.

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

Change 4

3A-100.7

TM 1-1520-251-10

NOTE

17.

Select NEW next to mission to be replaced (M1

or M2).

If the altitude data autofill is not present (e.g.

no DTED data not available), a four digit op-

18.

Select KNPT TGT as Mission Type.

erator data entry is required for the altitude

field (inclusive of leading zeros) before the

19.

Enter two - digit KNPT NO.

entry will be accepted. During testing, an in-

consistency has been noted where the

20.

Select Target Type. [ARMOR 10]

same altitude entered at different times re-

quired different amounts of leading zeros.

21.

Review/change The following on the Mission

The number of leading zeros that the alti-

Summary page.

tude field requires varies from 3 to 6 and

does not appear to have a definite pattern.

Shift (L5).

Shift (L1)- Verify/Set SHIFT CALC for auto-

(3) Review/change ALT.

matically performing calculations using the

laser for the center of the rounds burst or

(4) Review/change DEG/MILS.

perform MAN adjustment. Type C in KU and

press enter to display the SHIFT summary

(5) Review/change SQ.

page for an automatic adjustment.

(6) Press 1/1 (R1) to access Mission Sum-

With the SHIFT CALC summary page dis-

mary page.

played, note the TGT grid originally sent to

the FDC is present and lase the center of

d. Verify Destination SUB.

the rounds burst. The RND data field should

now have the rounds impact grid displayed.

Press SEND to request mission.

Review/change Fire Control by pressing

Status (L3) will change to ACPTD when MTO is

(R2).

received. Review MTO (R2) as needed.

Review/change Fire Control.

10.

Status (L3) will change to SHOT when fired.

(1) CONT - Select/Set as required. [ADJ

11.

Status (L3) will change to SPLSH for impact

FIRE]

warning (if requested).

(2) PRI - Select. [NORMAL]

12.

Status (L3) will change to RDCPL for rounds

complete (as appropriate).

(3) SH/FZ - Select. [NO PREF]

(4)

(R2) - Select Round Observation. [OK]

13.

To end mission, select (L2), then select EOM

RAT and press SEND.

(5) ANG - Select. [LO]

14.

(R4) will change to ## - KNPT when the known

(6) Press 1/1 (R1) to access Summary

point target number is received.

page.

NOTE

Verify Destination SUB ID.

Record the Known Point target number.

22.

Press SEND to request mission.

15. To conduct the SHIFT mission, select IDM/IN-

DEX switch to access IDM Top Menu page.

23.

Status (L3) will change to ACPTD when MTO is

received. Review MTO (R2) as needed.

16. Select ARTY MSNS to access Artillery Mission

pages.

24.

Status (L3) will change to SHOT when fired.

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

3A-100.8

Change 4

TM 1-1520-251-10

25. Status (L3) will change to SPLSH for impact

On Fire Control page.

warning (if requested).

(1) CONT - Select/Set.

26. Status (L3) will change to RDCPL for rounds

(2) PRI - Select/Set.

complete (as appropriate).

(3) SH/FZ - Select/Set.

27. To end mission w/disposition, casualties as fol-

(4)

(R2) - Select Round Observation. [OK]

lows:

(5) ANG - Select/Set.

a. Select/set (L2), then select EOM.

(6) Press 1/1 (R1) to access Summary

page.

b. Select/set DISPO/CAS (L4) as required.

Review/change Target Description e.g. [AR-

MOR 1].

c. Select/set CAS (L2) as required.

Review/change Target Location page by

pressing R4.

28. Press SEND.

On Target Location page.

3A.71.32 ARTILLERY REQUEST (FR Grid with MAN

Shift).

(1) UPD GRD or manual entry.

(2) Review/change TGT BRG.

NOTE

(3) Review/change ALT.

AFATDS actions are not shown.

(4) Review/change DEG/MILS.

Locate target using aircraft sensors and use

(5) Review/change SQ.

TSD CAQ as necessary for automatic entry of

target coordinates.

(6) Press 1/1 (R1) to access Mission Sum-

mary page.

ATHS page (B4) - Select as required.

Verify Destination SUB ID.

INDEX button (T5) - Select as required.

Press SEND to request mission.

Status (L3) will change to ACPTD when MTO is

Select NEW button (R2) or (R3) as desired (will

received. Review MTO (R2) as needed.

replace replace any mission in M1 or M2 Re-

spectively).

Status (L3) will change to SHOT when fired.

10.

Status (L3) will change to SPLSH for impact

Select NEW TGT as Mission Type.

warning (if requested).

11.

Status (L3) will change to RDCPL for rounds

Review/change the following on the Mission

complete (as appropriate).

Summary page.

12.

Select SHIFT.

a. Review/change Fire Control by pressing

(R2). [FFE] as required.

13.

Press (R1) For Manual.

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

Change 4

3A-100.9

TM 1-1520-251-10

14.

Enter DROP=XX and/or RIGHT=XX as re-

Review/change the following on the Mission

quired.

Summary page.

15.

Select (R1) and will return to Summary page.

Review/change Fire Control by pressing

(R2). [FFE]

16.

Review the Mission Summary page.

Review/change Fire Control.

17.

Press SEND to request shifted fire.

(1) TGT - Enter assigned number (if re-

quired).

18.

Status (L3) will change to SHOT when fired.

(2) CONT - Select/Set as required.

19.

Status (L3) will change to SPLSH (if requested).

(3) PRI - Select/Set. [NORMAL]

20.

Status (L3) will change to RDCPL for rounds

complete (as appropriate).

(4) SH/FZ - Select/Set. [NO PREF]

(5) R2 - Select Round Observation. [OK]

21.

To end mission w/ disposition, casualties as fol-

lows:

(6) ANG - Select/Set. [LO]

a. Select (L2), then select EOM RAT.

(7) Press 1/1 (R1) to access Summary

page.

b. Select DISPO/CAS (L4), then select.

Review/change Target Description.

c. Select CAS (L2), then select.

Change Target Location page by pressing

22.

Select SHIFT, Press (R1).

(R4).

23.

Enter DROP=XX, RIGHT=XX as required.

On Target Location Page.

(1) Review/change Target Location as re-

24.

Press SEND.

quired.

3A.71.33 FIRE MISSION REQUEST, END OF MISSION

(2) Review/change TGT BRG.

RECORD AS TARGET SEND and SUBSEQUENT FR

QUICK.

NOTE

If the altitude data autofill is not present (e.g.

1. Locate target using aircraft sensors and use

no DTED data not available), a four digit op-

TSD CAQ as necessary for automatic entry of

erator data entry is required for the altitude

target coordinates.

field (inclusive of leading zeros) before the

entry will be accepted. During testing, an in-

2. ATHS page (B4) - Select as required.

consistency has been noted where the

same altitude entered at different times re-

3. INDEX button (T5) - Select as required.

quired different amounts of leading zeros.

The number of leading zeros that the alti-

4. Select ARTY MSNS to access Artillery Mission

tude field requires varies from 3 to 6 and

pages.

does not appear to have a definite pattern.

5. Select NEW button (R2) or (R3) as desired (will

replace replace any mission in M1 or M2 Re-

(3) Review/change ALT.

spectively). Select NEW next to mission to be

replaced (M1).

(4) Review/change DEG/MILS.

6. Select NEW TGT as Mission Type.

(5) Review/change SQ.

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

3A-100.10

Change 4

TM 1-1520-251-10

(6) Press 1/1 (R1) to access Mission Sum-

23. Status (L3) will change to SHOT when fired.

mary page.

24. Status (L3) will change to SPLSH (if requested).

f. Verify Destination SUB.

25. Status (L3) will change to RDCPL for rounds

8. Press SEND to request mission.

complete (as appropriate).

9. Status (L3) will change to ACPTD when MTO is

26. To end mission w/disposition, casualties as fol-

received. Review MTO (R2) as needed.

lows:

10. Status (L3) will change to SHOT when fired.

a. Select (L2), then select EOM.

11. Status (L3) will change to SPLSH for impact

b. Select DISPO/CAS (L4), then select.

warning (if requested).

c. Select CAS (L2), then select.

12. Status (L3) will change to RDCPL for rounds

complete (as appropriate).

27. Press SEND.

13. To end mission, select (L2), then select EOM

3A.71.34 Artillery Intelligence Message (ATI GRID).

RAT and press SEND.

Locate target using aircraft sensors and use

NOTE

TSD CAQ as necessary for automatic entry of

target coordinates.

The Target Number will retained by artillery

for later recall. [RECORD TARGET #]

ATHS page (B4) - Select as required.

14. To Run Second Mission Select IDM/INDEX

INDEX button (T5) - Select as required.

switch to access IDM Top Menu page.

Select REPORTS.

15. Select ARTY MSNS to access Artillery Mission

pages.

Select ATI.

16. Select NEW next to mission to be replaced (M1

or M2).

Enter DEST.

17. Select QUICK as Mission Type.

Select REL option.

18. Select Target Position as TGT NO.

Select Target Type as required.

19. Enter TGT NO recorded above.

Select Target Strength as required.

20. Review the Mission Summary page.

10.

Change Target Location page by pressing (R4).

21. Press SEND to request mission.

a. On Target Location page.

22. Status (L3) will change to ACPTD when MTO is

(1) Target Location Review/Set as re-

received. Review MTO (R2) as needed.

quired.

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

Change 4

3A-100.11

TM 1-1520-251-10

NOTE

9. Press SEND.

• If the altitude data autofill is not present

10. An MTO from FDC that changes status (L3) to

(e.g. no DTED data not available), a four

ACPTD indicates PPLN request is accepted.

digit operator data entry is required for

the altitude field (inclusive of leading zer-

11. Select IDM/INDEX switch to access IDM Top

os) before the entry will be accepted.

Menu page.

During testing, an inconsistency has

been noted where the same altitude en-

12. Select ARTY MSNS to access Artillery Mission

tered at different times required different

pages.

amounts of leading zeros. The number of

leading zeros that the altitude field re-

13. Select PPLN LIST.

quires varies from 3 to 6 and does not ap-

pear to have a definite pattern.

14. Press P1 NEW to designate the desired pre-

planned mission number.

(2) Change ALT.

15. Press M1 ACPTD PPLN or M2 to insert the ac-

(3) Review SQ.

cepted PPLN request into the PPLN List. (The

preplanned mission is now on file; IDM may be

b. Press 1/1 (R1) to access ATI Summary

used for other purposes and mission executed

page.

later.)

11. Review/change Summary page.

To execute a preplanned mission:

12. Press SEND.

16.

Select IDM switch to access IDM INDEX page,

Press (L2) (ARTY MSNS) to access the ARTIL-

3A.71.35 Fire Mission (Copperhead Final Protective

LERY.

Fire [CPHD FPF]).

17.

Select IDM/INDEX switch to access IDM Top

1. Locate target using aircraft sensors and use

Menu page.

TSD CAQ as necessary for automatic entry of

target coordinates.

18.

Select ARTY MSNS to access Artillery Mission

pages.

2. ATHS page (B4) - Select as required.

19.

Select PPLN LIST.

3. INDEX button (T5) - Select as required.

20.

Select P1 as desired.

4. Select ARTY MSNS to access Artillery Mission

pages.

21.

Press SEND.

5. Select NEW button (R2) or (R3) as desired (will

22.

Status (L3) will change to SHOT when fired.

replace replace any mission in M1 or M2 Re-

spectively). Select NEW next to mission to be

23.

Status (L3) will change to DSGNT (if sent).

replaced (M1).

24.

Perform designate operation.

6. Select REQ PPLN to choose preplan mode.

25.

Status (L3) will change to RDCPL for rounds

7. Select CPHD.

complete.

8. ARTY Mission Summary page appears with

26.

To end mission, select (L2), then select END

MSN1 label.

FPF and press SEND.

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

3A-100.12

Change 4

TM 1-1520-251-10

3A.71.36 Fire Mission (Copperhead Fire Request

(2) Review/change TGT BRG.

Grid [CPHD FR] Grid).

NOTE

Locate target using aircraft sensors and use

If the altitude data autofill is not present (e.g.

TSD CAQ as necessary for automatic entry of

no DTED data not available), a four digit op-

target coordinates.

erator data entry is required for the altitude

field (inclusive of leading zeros) before the

ATHS page (B4) - Select as required.

entry will be accepted. During testing, an in-

consistency has been noted where the

INDEX button (T5) - Select as required.

same altitude entered at different times re-

quired different amounts of leading zeros.

Select ARTY MSNS to access Artillery Mission

The number of leading zeros that the alti-

pages.

tude field requires varies from 3 to 6 and

does not appear to have a definite pattern.

Select NEW button (R2) or (R3) as desired (will

replace replace any mission in M1 or M2 Re-

spectively). Select NEW next to mission to be

(3) Review/change ALT.

replaced (M1).

(4) Review/change DEG/MILS.

Select CPHD as Mission Type.

(5) Review/change SQ.

Select Target Position as NEW TGT.

f. Press 1/1 (R1) to access Mission Summary

Review/change the following on the Mission

page.

Summary page.

g. Verify Destination SUB.

Review/change Fire Control by pressing

(R2). [AMC FFE]

9. Press SEND to request mission.

10. Status (L3) will change to ACPTD when MTO is

Review/change Fire Control.

received. Review MTO (R2) as needed.

(1) TGT - Enter assigned number (if re-

NOTE

quired).

The Observer is awaiting a READY com-

(2) PRI - [URGENT].

mand/status from the FSE.

(3) SH/FZ - Verify/Select CPHD.

11. Status (L3) will change to READY.

(4)

(R2) - Select Round Observation [OK].

12. Verify the Mission Command is FIRE.

(5) ANG - Select [LO].

13. Press SEND to fire the mission.

(6) Press 1/1 (R1) to access Summary

14. Status (L3) will change to ACPTD when MTO is

page.

received. Review MTO (R2) as needed.

NOTE

Review/change Target Description as re-

quired [ARMOR].

The Observer is awaiting a READY com-

mand/status from the FSE.

Review/change Target Location page by

pressing (R4).

15. Status (L3) will change to READY.

On Target Location page.

16. Verify the Mission Command is FIRE.

(1) Review/change Target Location.

17. Press SEND to fire the mission.

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

Change 4

3A-100.13

TM 1-1520-251-10

18. Status (L3) will change to SHOT when fired.

3. Select MOVEMENT (L3) from INDEX page.

19. Status (L3) will change to DSGNT (if sent).

4. Select Movement Type as required e.g. [MY

POSITION].

20. Perform designate operation.

a. If MY POSITION, then OWN Present Posi-

21. Status (L3) will change to RDCPL for rounds

tion coordinates and text “MY POSITION”

complete.

will be message text.

22. To end mission w/disposition, casualties as fol-

5. DEST - Enter.

lows:

6. Review/change Summary page.

a. Select (L2), then select EOM.

7. Press SEND.

b. Select DISPO/CAS (L4), then select.

8. Observer reviews received message.

[BURN].

3A.71.39 Aircraft Message SIT/STAT REPORT.

c. Select CAS (L2), then select [10].

Purpose: To report the operator’s own situation and activi-

23. Press SEND.

ty (mode status) when conducting AIR mode baud rate

operations or for sending the platform’s present position

3A.71.37 Aircraft Message PP REQUEST/REPLY.

when conducting TACFIRE mode baud rate operations

with the artillery.

1. ATHS page (B4) - Select as required.

NOTE

2. INDEX button (T5) - Select as required.

• This message has a different form in

3. Select REPORTS.

TACFIRE (TFR) mode nets than in AIR

mode nets due to the differing require-

4. Select REQUEST.

ments of artillery and air operations.

• The grid zone character is also sent in the

5. Select POS UPDT.

TFR form of this message. In order for it

to be properly defined, the ARTILLERY

6. Enter TEAM SUB ID for DEST.

TARGET POSITION page must have

been filled in either as part of an Artillery

7. Select SUB NET entry, if shown.

Report (or Artillery Mission). The Report

(or Mission) did not have to be trans-

8. Press SEND.

mitted.

9. Press corresponding LEFT key to toggle be-

1. ATHS page (B4) - Select as required.

tween subscriber MGRS UTM coordinates and

range/bearing (kilometer and degrees) from

2. INDEX button (T5) - Select as required.

OWNSHIP.

3. REPORTS button (L4) - Select.

NOTE

4. SIT/STATUS button (L2) - Select.

A few seconds may be required before re-

sponse is received and displayed.

5. MY ACTIVITY mode - Select as required.

3A.71.38 Aircraft MOVEMENT Message.

• L2

HOLDING (holding my position).

• L3

CONT MSN (continuing mission).

1. ATHS page (B4) - Select as required.

• L4

OBS TGT (observing the target).

2. INDEX button (T5) - Select as required.

• R2

ENGAGING (engaging in battle).

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

3A-100.14

Change 3

TM 1-1520-251-10

Selecting an activity mode will command the SITUATION

d. WEAPONS STATUS Page - Do not over-

REPORT SUMMARY format to display, the *>DEST: but-

write the 1553 auto - fill values, all data is de-

ton L1 will be filled with the TM ID (if contained in the

rived through the 1553 databus. Selecting

ORIG ID page), and the KU will be active with “ATHS:”

the page will display the following auto - fill

and flashing cursor displayed.

options:

[COD1 = XXXX] (L2), MSL PRI CHAN laser

code set during WPNS INIT checks.

KU (ATHS:) - Enter destination subscriber/

[XXXX = COD2 ] (R2), MSL ALT CHAN laser

member ID as required.

code set during WPNS INIT checks.

[ATGM = XX] (L3), Hellfire Missiles that are de-

tected on the bus.

DEST (*) button (L1) - Validate correct DEST ID

displayed.

[A/A = XX] Air to Air missiles (growth) detected

on the bus.

[RKTS = XX] 2.75 inch rockets detected on the

NOTE

bus.

[AMMO = XXXX] 30mm round count (detected

• Assuming that a weapons initialization

LMP or WPN load page setting).

check has been accomplished, the

AH-64D sends the IDM the pertinent

8. SEND button (R5) - Select.

MUX data required to auto - fill all the SI-

TREP SUMMARY data options (negates

9. XMT#/ACK response (R1) - Observe.

any requirement for operator editing).

3A.71.40 Aircraft Message SPOT REPORT.

• The SITREP SUMMARY option format

NOTE

was designed for aircraft that do not sup-

• The only time that a coordinate is not

port the IDM SITREP auto - fill capability.

auto-filled in the spot report UTM grid

location > data entry field is when there

has been no CTLM or TGT CAQ since

the aircraft last power - up.

The SITREP SUMMARY page data considerations:

•

The SPOT REPORT target location

should normally be input using the TSD

CAQ function when there is a UTM grid

a. Fuel - Do not overwrite the 1553 auto - fill

already displayed.

value.

1. ATHS page (B4) - Select as required.

b. Activity

- Review/change as required (the

activity is set by the operator prior to the dis-

2. INDEX button (T5) - Select as required.

play of the SITREP SUMMARY format. The

3. REPORTS button (L4) - Select.

operator may edit the activity if a change in

activity occurs prior to sending the mes-

4. SPOT button (L3) - Select (KU “ATHS:” is active

sage).

upon display of SPOT REPORT summary).

c. Position - Do not overwrite the 1553 auto -

5. KU (ATHS:) - Enter destination subscriber/

fill value.

member ID as required.

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

Change 4

3A-100.15

TM 1-1520-251-10

6. DEST (*) button (L1) - Validate correct DEST ID

3. Select REPORTS.

displayed.

4. Select BDA.

^OBS selection button (L3) - Validate/Set

(toggle) as required.

5. DEST - Enter.

• ENGAG

6. Manually enter data for BDA on DETAIL page.

• OBSRV

[ARMOR = As required.]

• CONT

[PERSONAL = As required.]

TARGET DESC> data button (R3) - Validate or

select and set as required - Selection will dis-

[VEHICLE = As required.]

play the TARGET DESC control format options

as follows:

[ACFT = As required.]

Target Type

(up to

3).

[ARMOUR, AS-

7. Review/change Summary page.

SEMBLY(TROOPS), CENTER (DIVISION)]

8. Press SEND.

On SPOT TARGET DESC page, select Target

Strength (up to 3). [10, 20,50]

3A.71.42 Aircraft Negative SPOT REPORT.

Select Target Activity. (Applies to all Targets in

ATHS page (B4) - Select as required.

report.) [MOVING SE]

INDEX button (T5) - Select as required.

Press 1/1 (R1) to access SPOT RPT SUMMA-

RY page.

Select REPORTS.

10.

Press (R4) to access AIR TGT POSN page.

Select NEG SPOT.

11.

Review/change Target Position using UPD GRD

DEST - Enter.

or manual entry.

Review/change OBS ACT - As required.

12.

Press (R1). DEST - Enter.

Press (R4) to change location position using

13.

Review/change OBS ACT - As required.

manual entry.

14.

DEST (L1) - Select.

Press (R1) to return.

15.

KU (ATHS:) - Enter destination member/sub-

Press (R3) to access NEG SPOT REPORT DE-

scriber ID.

TAIL page.

16.

Press SEND.

10.

Enter freetext. [NOTHING BUT SAND]

3A.71.41 Aircraft BDA REPORT Message.

11.

Press (R1) to return.

1. ATHS page (B4) - Select as required.

12.

Press SEND.

2. INDEX button (T5) - Select as required.

13.

Observer reviews received message.

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

3A-100.16

Change 4

TM 1-1520-251-10

3A.71.43 Aircraft MAYDAY Message.

7. Manually enter data for BDA on DETAIL page.

a. ARMOR = As required.

1. Select IDM/INDEX switch to access IDM Top

Menu page.

b. PERS = As required.

2. Select MSGS/FTXT.

c. VEH = As required.

3. Select MAYDAY.

d. ACFT = As required.

4. DEST - Enter.

8. Review/change Summary page.

5. Review/change location.

9. Press SEND.

10. Observer reviews received message.

6. Press SEND.

3A.71.46 Aircraft CAS REPORT.

7. Observer reviews received message.

1. ATHS page (B4) - Select as required.

3A.71.44 Aircraft MSGS/FTX (FREE TEXT, BDA, CAS,

CHECK FIRE, CANCKF).

2. INDEX button (T5) - Select as required.

System Connectivity (FREE TEXT) from shooter:

3. Select REPORTS.

1. ATHS page (B4) - Select as required.

4. Select CAS.

2. INDEX button (T5) - Select as required.

5. DEST - Enter.

6. Manually enter data for CAS on DETAIL page.

3. Select MSGS/FTXT.

a. ARMOR = As required.

4. Select FREE TEXT.

b. PERS = As required.

5. Enter DEST sub.

c. VEH = As required.

6. Message Type - Select DATA.

d. ACFT = As required.

(L3) key - Select and enter desired free text

7. Review/change Summary page.

message - As required.

8. Press SEND.

9. Observer reviews received message.

3A.71.47 Aircraft CHECK FIRE Message.

3A.71.45 Aircraft BDA REPORT.

1. ATHS page (B4) - Select as required.

2. INDEX button (T5) - Select as required.

3. Select MSGS/FTXT.

3. Select REPORTS.

4. Select CHECK FIRE.

4. Select BDA.

5. Enter DEST sub.

5. DEST - Enter.

6. Press SEND.

6. Enter Report Position - As required.

7. Observer reviews received message.

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

Change 4

3A-100.17

TM 1-1520-251-10

3A.71.48 Download (Transfer) Current Com Data

NOTE

From Source Aircraft To Target Destination DTC.

The DTU COM SAVE status transfer process

may be reinitiated with other DTC’s as re-

NOTE

quired.

• SAVE status is written to the topmost

3A.71.49 Upload (Transfer) Current Com Data To Target

mounted (slot 1-4) Mission DTC loaded in

Destination Aircraft From DTC.

the DTU upon a change to the ownship’s

COM data or after one minute of elapsed

time following the mounting of the DTC.

NOTE

• The target DTC has to be mounted as the

• The originator (source) data contained on

topmost MSN DTC in the source aircraft’s

an updated target destination DTC is a re-

DTU.

flection of the originating (source) aircraft’s

• Current MSN files will also be written to the

SAVE status data.

DTC.

• The target DTC has to be mounted as the

• This procedure is performed on the ground

topmost MSN DTC in the source aircraft’s

with internal or external power supplied.

DTU.

• The Pilot (P) of an aircraft (data exchange

When an aircrew has a requirement to exchange current

target aircraft) desiring to update the COM

COM data via the DTC, the Pilot (P) of the source aircraft

configuration to a unit’s current COM con-

(data download) will perform the following steps.

figuration has no more than one minute to

select THRU-FLT following the mounting of

1. DTU or DMS SHUTDOWN page - Select and dis-

the DTU containing updated data.

play.

• If a THRU-FLT is not initiated prior to one

minute after mounting the DTC, the DTC

2. DTU mode button - Select STBY as required.

will be overwritten with that aircraft’s own

SAVE status.

• Following a THRU-FLT data load of SAVE

3. DTU door - Open.

status data retrieved from a data exchange

source aircraft, aircrews will need to edit the

4. Target destination mission DTC - Mount DTC in

originator data using either the ORIG DIR

the source aircraft’s topmost DTU slot (remove any

REPLACE button or manually editing the

pre-existing DTC in the largest slot, as required).

ORIG ID data.

• Aircrews using the ORIG DIR’s SEARCH

NOTE

and REPLACE functions will significantly

reduce the potential for data input error and

The ownship’s DTC will write the current COM

reduce the time that would otherwise be re-

SAVE status, along with MSN SAVE status to

quired to manually edit originator data.

the topmost MSN DTS card after DTC card

has been properly mounted (DTU OPER) and

When an aircrew has a requirement to exchange current

one minute of time has elapsed.

COM data via the DTC, the Pilot (P) of the source aircraft

(data uploading) will perform the following steps.

5. DTU door - Latch and note DTU button mode from

1. DMS DTU page - Select and display.

STBY to OPER, and then allow sixty seconds to

elapse.

2. DTU mode button - Select STBY as required.

6. DTU mode button - Select STBY and wait for OIP

3. DTU door - Open.

to complete.

4. Updated target DTC - Mount DTC in the source

aircraft’s topmost serviceable DTU slot (remove

7. DTU door - Open.

any pre - existing DTC in the target slot as re-

8. Target DTC - Remove.

quired).

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

3A-100.18

Change 4

TM 1-1520-251-10

Section III. NAVIGATION SUBSYSTEM

3A.72 INTRODUCTION

2. Doppler Radar Velocity Sensor (DRVS).

This section describes crew interface requirements for

3. Air Data System (ADS).

management of the navigation subsystem (fig. 3A-90).

The navigation subsystem provides aircraft heading, atti-

4. Radar Altimeter (RAD ALT).

tude, Present Position (PP), velocity (relative to ground

and air), radar and barometric altitude, and distance in-

5. Automatic Direction Finder (ADF).

formation for piloting and navigating. The navigation sub-

system consists of the following major components:

6. High Integrated Air Data Computer (HIADC).

1. Embedded Global Positioning System Inertial

Navigation System (EGI).

7. Flight Management Computer (FMC).

GPS

ANTENNA

HIADC

ADF

RECEIVER

RADAR

ALTIMETER

FLIGHT MANAGEMENT

COMPUTER

DOPPLER RADAR

EGI 2

VELOCITY SENSOR

EGI 1

LBA2400

Figure 3A-90. Navigation Subsystem

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

3A-102

Change 4

TM 1-1520-251-10

3A.73 EMBEDDED GLOBAL POSITIONING SYSTEM

prompting the aircrew for input for the respective EGI and

INERTIAL NAVIGATION SYSTEM (EGI)

doppler boresight numbers.

The aircraft has two EGIs which use internal accelerome-

Once the EGIs have been provided the boresight num-

ters, rate gyro measurements, and external sensor mea-

bers and the NAV mode, the EGIs will determine the air-

surements to estimate the aircraft state. Only one EGI

craft attitude. Upon finding attitude (i.e. attitude displayed

provides aircraft state information to aircraft systems

on the FLT page), the NAV system will provide the EGIs

while the second EGI is for backup. The external sensor

with position information from the primary EGIs GPS (if

measurements include range and range rate from the

tracking satellites) or the NAV system’s last stored posi-

GPS, velocity from the DRVS, barometric altitude, and

tion at power down.

manual position updates from the system processor (SP).

Incorporated within the EGI is an Inertial Measurement

If no GPS or last stored present position is available, the

Unit (IMU) and the processing functions for performing the

NAV system will provide an advisory prompt on the EUFD

inertial navigation computations, GPS navigation solu-

directing the crew to enter a present position. If a GPS

tions, receiver management, and Kalman filter estimates

position is given to the EGIs to align to, the EGIs initial

to support all aircraft and weapon systems requirements.

position confidence on the TSD UTIL page will read

approximately .031 km. If a stored position is given to the

The data derived from the EGI includes :

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

TSD UTIL page will read approximately 9.00 km. When a

• Acceleration

position is manually entered to the EGIs to align to on the

• Angular rate

ground, the EGI initial position confidence on the TSD

UTIL page will read approximately .050 km.

• Attitude

• Heading

Upon the EGIs being given a present position, the NAV

• Velocity

system will provide an alignment command to the EGIs.

The EGIs alignment time is approximately 4 minutes on

• Position

the ground. When an in-flight alignment is performed by

• Position Error Estimate

an INU reset the alignment time, with GPS tracking satel-

lites with crypto keys verified and doppler velocities avail-

a. System Description. The EGI is a velocity

able, is approximately 35 seconds. If an in-flight alignment

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

is performed with doppler velocity aiding only (no GPS),

EGI unit also houses the 5 - channel GPS receiver.

the alignment time is approximately 6 minutes.

b. Operation. Initialization and alignment of the EGI

The heading tape symbology is displayed and TSD Map

is automatically controlled by the primary System Proces-

Frozen Cue is removed when alignment of the primary

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

EGI is complete. The reaching of alignment of the second-

power up, the SP provides the boresight numbers stored

ary EGI is noted by the removal of the inhibit selection bar

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

beside the primary INU selection on the TSD UTIL page.

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

There is no effect on the NAV system accuracy if the en-

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

gines are started, or if the main rotor is turning during

NAV system will provide an advisory on the EUFD,

alignment.

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

Change 2

3A-103

TM 1-1520-251-10

3A.73.1 Global Positioning System (GPS).

3A.73.2 Map Datums. Map datums are mathematical

models of the Earth used to calculate the coordinates on

a. System Description. The GPS receiver installed in

maps and charts. Currently, many datums are used through-

each EGI is a 5-channel receiver. The receiver is capable of

out the world to produce maps. The standard for US Forces

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

is World Geodetic System 1984 (WGS 84). However, many

Group User Variable (GUV) is the normal encryption key

US Military Grid Reference System (MGRS) and foreign

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

maps are still based on other datums. Not correcting for dif-

When keyed the GPS receiver will automatically use anti-

ferent datums can cause significant errors. The coordinates

spoof/jam capabilities when they are in use. The EGI keying

for a point on the Earth’s surface in one datum will not match

connector is located in the aft avionics bay on the multifill port

the coordinates from another datum for the same point. The

panel. The EGI will retain the key through power ON/OFF/ON

Navigation System requires that the datum be entered with

cycles. Because of safeguards built into the EGI, it is not con-

the coordinate data. If it is not entered, it will default to the

sidered classified when keyed. The antenna for the GPS re-

present position datum. The datum included with each set of

ceiver is located on the top of the vertical stabilizer.

coordinate data allows the Navigation System to calculate the

NOTE

compensations for different datums. The datum used is iden-

The GPS signal is vulnerable to jamming and

tified by a two digit number. Table 3A-6 lists all of the datums

spoofing operations. Under these conditions

that may be used with the Navigation System.

some or all satellites may be unboxed and/or

Table 3A-6. Datum Names and Codes

aircraft position, airspeed and/or position confi-

Datum Code Used

dence may be excessively high or changing

Datum

By Navigation

quickly.

Name/Description

System

b. Operation. The operation of the GPS receiver is en-

Adindan

tirely automatic. The GPS receiver is powered when the EGI

ARC 1950

is powered. If the GPS is keyed, it may take as long as 12

Australian 66

minutes to verify the key with the satellites. The GPS pro-

vides range and range rate information to the EGI as well as

Bukit Rimpah: Indonesia

position and time information to the System Processor (SP).

Camp Area Astro

When the GPS has tracked the first satellite, it will update the

Djarkarta: Indonesia

date and time to the Navigation System. There are no specif-

European 1950

ic operator actions that may be taken with the GPS system.

Geodetic Datum 1949

c. Data Transfer Unit (DTU). The DTU is used to load

Ghana

mission data, digital maps, and images into the aircraft. The

Guam 1963

data is transferred by the DTU from the Data Transfer Card

Gunung Segara: Indonesia

(DTC). The DTC is programmed using the Aviation Mission

Gunung Serindung: Indonesia

Planning System (AMPS). The AMPS writes the coordinate

Herat North

files for waypoints, control measures, hazards, targets,

Hjorsey

threats, and routes with their associated waypoints. The NAV

Hu-Tzu-Shan

mode and present position for the EGI’s can be loaded from

the DTC. Whenever the pilot or CPG makes changes to any

Indian: Mean Value For Thailand

of the waypoints or routes, the SP will automatically update

And Viet-Nam

the DTC with those changes. The SP will preserve those

Ireland 1965

changes in the event of an electrical power transient.

Kertau: West Malaysia

Liberia 1964

Local Astro

Luzon

Merchich

Montjong Lowe: Indonesia

Minna

North American Datum of 1927:

Continental US

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

3A-104

Change 3

TM 1-1520-251-10

Table 3A-6. |Datum Names and Codes (cont)

NOTE

Datum Code Used

If the aircraft has been moved over one nauti-

Datum

By Navigation

cal mile since it’s last power down (LAT/LONG

Name/Description

System

data differs more than one minute from actual

position) and does not acquire satellites within

North American Datum of 1927

a short time (three-five minutes) after power

Alaska: Canada

up, the following procedures will help insure a

Old Hawaii: Maui

good alignment.

Old Hawaii: Oahu

a. Aircraft Moved Over One Nautical Mile Since

Old Hawaii: Kauai

Last power Down.

England Scotland Wales

(1) Manual Procedure.

Qornoq

(a) Ensure that the current Zulu date and time

Sierra Leone 1960

are entered on the TSD UTIL page.

Campo Inchauspe: Argentina

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

Chua Astro: Paraguay

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

Corrego Alegre: Brazil

the aircraft current position. (The HDG selection must be dis-

Provisional South American 1956

played when entering the current position.) If HDG is not dis-

Yacare: Uruguay

played or the HDG selection is removed while the current

Tananarive Observatory: South

position data is being entered, perform an INU1 and INU2 re-

American 1925

set and then quickly (within one minute) enter the aircraft cur-

rent position.

Timbali: East Malaysia

Tokyo: Japan: Korea: Okinawa

(2) DTU Procedure.

Carthage

(a) If the correct aircraft current position has

Special Datum: Indian Special

been entered on the DTU, selecting Navigation on the DTU

page will automatically update the current stored position and

Special Datum: Luzon

reset the EGI(s) if the Position Confidence (PC) values are

Tokyo Special

greater than 0.031 km.

WGS 84 Special Datum

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

WGS 72 (Sino-Soviet Bloc)

ing Not Available).

WGS 84 Standard Datum*

(1) EGI position updates can be accomplished

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

anytime the PSN selection on the TSD page is present

nate data.

(Primary EGI Position Confidence value greater than

0.050 km).

3A.73.3 EGI Operational Procedures.

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

Confidence factor increases to approximately 0.10 km the

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

CAUTION

cases like this, several position updates may be required to

minimize the differences between EGIs position and actual

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

The GPS system may provide erroneous

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

system data during normal GPS operations

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

due to signal jamming and spoofing opera-

by an immediate present position update to align the EGIs.

tions. Verify proper EGI operation using the

3A.74 AN/ASN-157 DOPPLER RADAR VELOCITY

TSD UTIL page, position checks, and atti-

SENSOR (DRVS)

tude display against external references

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

and back-up instruments. If jamming or

ceiver/transmitter, antenna, signal data converter comput-

spoofing is suspected, perform position

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

updates. Position updates will temporarily

DRVS provides aircraft referenced ground velocities to

delay erroneous position errors only.

both EGIs as a velocity aiding source.

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

Change 3

3A-105

TM 1-1520-251-10

3A.75 AIR DATA SYSTEM (ADS)

3A.76 AN/APN-209 RADAR ALTIMETER (RADALT)

The aircraft contains one Radar Altimeter. The Radar Altime-

The ADS is comprised of two independent air data subsys-

ter consists of a receiver/transmitter and antennas which pro-

tems. The Flight Management Computer (FMC) comprises

vides actual terrain clearance height. The information is dis-

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

played on the MPD and Helmet Display Unit (HDU) and

tem (HADS) comprises the second air data subsystem.

presented in audio format via the CIU for low altitude excee-

dances only.

3A.75.1 Helicopter Air Data System (HADS). The HADS

is comprised of a High Integrated Air Data Computer

Together the ADS and the Radar Altimeter provide the in-

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

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

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

rain elevation for the aircraft present position under cer-

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

tain valid data parameters.

direction, and free airstream temperature. The AADS probe

3A.77 AN/ARN-149 AUTOMATIC DIRECTION FINDER

interfaces indirectly through the SVA and URB to the HIADC.

(ADF)

The right AADS probe temperature sensor is the only probe

The ADF receives frequencies from 100 to 2199.5 khz.

to provide temperature information directly to the SP. The left

The ADF has two functional modes of operation: ANT and

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

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

trols the selection of which AADS probe provides information

providing only an audio output of the received signal. In

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

ADF mode it functions as an automatic direction finder

The HIADC contains the processor and related hardware,

system that provides a relative bearing to the station sig-

along with ambient and pitot pressure sensors, to compute

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

air mass related data.

3A.78 NAVIGATION SUBSYSTEM CONTROLS AND

3A.75.2 FMC. The FMC air data subsystem also contains

DISPLAYS

the processor and related hardware to compute pressure alti-

Navigation subsystem controls and displays are inte-

tude, pitot airspeed and density altitude related information.

grated into the following major components:

The FMC receives longitudinal and lateral True Air Speeds,

• Multipurpose Displays (MPD)

static temperature, and longitudinal and lateral True Air

• Keyboard Unit (KU)

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

• Enhanced Up Front Display (EUFD)

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

of the received HIADC and derived FMC airdata information

The TSD frame of reference is relative to one of three select-

to those onboard aircraft subsystems requiring it. The FMC

able orientations on the MAP page; north-up, track-up, or

provides the following data:

heading-up. In the PAN mode, the TSD frame of reference is

determined by the PAN controls. The TSD uses graphic sym-

• Pressure Altitude

bols to illustrate waypoints and routes, hazards, phase lines,

• Density Altitude

targets/threats, and various control measures. The KU can

• Barometric Altitude

be used to enter information when required. The NAV system

• Static Air Pressure

provides, on the EUFD, advisories for waypoint approach

and passage, entry of EGI boresight data, and position up-

• Sideslip Angle

date.

• Lateral True Air Speed

3A.79 MPD TACTICAL SITUATION DISPLAY (TSD)

• True Air Speed

The TSD page, (fig 3A-91) controls navigation subsystem

• Calibrated Air Speed

moding. Selecting the TSD subsystem button or the TSD but-

• Longitudinal True Air Speed

ton from the MENU page calls up the TSD page which inte-

• Static Temperature

grates various navigation status windows, graphic symbols,

• Air Density Ratio

digital maps, and control selections.

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

3A-106

Change 2

TM 1-1520-251-10

3A.79.1 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.

3A.79.2 RPT Page Button. Selection of the RPT but-

ton will cause the RPT page to be displayed.

3A.79.3 PAN Page Button. Selection of the PAN but-

ton will cause the PAN page to be displayed.

3A.79.4 SHOW Page Button. Selection of the SHOW

Page button will cause the SHOW page to be displayed.

3A.79.5 Present Position (PP) Button. Selecting the

PP button commands display of the present position sta-

tus window.

3A.79.6 COORD Page Button. Selection of the COORD

button will cause the COORD page to be displayed.

3A.79.7 TSD UTIL Button. Selection of the UTIL but-

LBA5063A

ton will cause the UTIL page to be displayed.

Figure 3A-91. TSD Page

3A.79.8 Map Viewing Range UP Button. The map view-

• T1

RPT Page button

ing range buttons (R1 & R2) are used to change the range (in

KM or NM) of the map on the screen in the 2D mode and the

• T2

PAN Page Page button

field of view (in degrees) in the 3D mode. The number be-

• T3

SHOW Page button

tween the arrows indicates the height and width (in kilometers

• T4

PP button

or nautical miles as selected on the FLT page) in the 2D map

mode and in degrees of field of view in the 3D map mode.

• T5

COORD Page button

Selection of the Arrow Up button causes more map to be

• T6

UTIL Page button

displayed (changing the 2D zoom and/or scale or the 3D field

• L1

INST Page button

of view of the map as necessary). If the button is selected

• L2

REC button

and released, the next higher default map viewing range or

field of view option will be selected. If selected and held, the

• L3

JAM button

map will continuously zoom out. For a brief time afterwards

• L5

HDG button

the number will be bolded, indicating selection of the Arrow

• L6

PSN button

UP will fine tune the map viewing range or field of view. The

• L6

SA button

default Map viewing ranges for the

2D map are:

400K/216NM, 150K/81NM, 100K/54NM, 75K/40.5NM,

• R1

Map Viewing Range UP button

50K/27NM,

25K/13.5NM,

15K/8.1NM,

10K/5.4NM,

• R2

Map Viewing Range DOWN button

5K/2.7NM, 2K/1.1NM and 1K/.5NM. The default Map fields of

• R3

CTR button

view for 3D map are: 15, 30, 45, 60, 75, and 90 degrees.

• R4

FRZ button

3A.79.9 Map Viewing Range DOWN Button. Selection of

• R5

CAQ (Cursor Acquisition) button

the Arrow Down button causes less map to be displayed

• R6

ACQ button

(changing the 2D zoom and/or scale of the 3D field of view of

• B2

PHASE button

the map as necessary). If the button is selected and released,

the next lower default map viewing range or field of view op-

• B3

BAM Page button

tion button will be selected. If selected and held, the map will

• B4

MAP page button

continuously zoom in. For a brief time afterwards the number

• B5

RTE Page button

will be bolded, indicating selection of the Arrow down will fine

• B6

POINT Page button

tune the map viewing range or field of view.

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

Change 3

3A-107

TM 1-1520-251-10

With CAQ selected, the crewmember’s cursor is active for

selecting a terrain point on the TSD. When the crewmember

does not select a point on the TSD the TRN (terrain) “cross”

symbol is displayed with the label PLT or CPG. The TRN

symbol is white. The geographic location is stored in coordi-

nate COORD file T55 for the pilot and T56 for the CPG. If

each crewmember has a point selected, two TRN symbols

with the appropriate crewstation label will be displayed on the

TSD. RFI detected threats are only selectable when the se-

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

Selecting the CAQ button freezes the TSD map.

3A.79.13 Acquisition (ACQ) Button. The ACQ button

provides the ability to select the desired acquisition

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

tion of selections.

3A.79.14 INST Page Button. Selection of the INST

button will cause the INST page to be displayed.

3A.79.15 Receive (REC) Button. The REC button is used

to receive the most recent IDM messages that can be re-

ceived from the TSD page. The REC button is only displayed

LBA5257

when a message is in the IDM buffer. The REC button is dis-

Figure

3A-91A.

MAP Viewing Range (Extended)

played in WHITE. When the REC button is selected by a

single push, the received grouped options are displayed with

NOTE

up to four IDM messages (IDM sender callsign) displayed.

Selection of an IDM callsign will store the message to the cur-

Certain maps can be zoomed out further than

rent mission or automatically switch to the RCVD message

the viewable limits of the map in order to show

the entire FCR footprint when the ownship is

page for TACFIRE messages. When the REC button is se-

centered on the display. (The 12.5K Scale

lected by a double push, the last message received will be

maps can only be zoomed to show the entire

stored. When the selected message is one of the following,

footprint when the ownship is decentered.)

the message will be stored in the appropriate current mission

file location without being identified:

3A.79.10 Center (CTR) Button. Selecting the CTR button

toggles the ownship symbol to the center or aft section of the

• WPT/HZD

map area (based on orientation selection) on the display.

• CTRLM

3A.79.11 Freeze (FRZ) Button. Selection of the FRZ

• TGT/THRT

button provides the ability to freeze the map display or re-

• FCR TGT RPT

turn to an active display.

• BDA REPORT

3A.79.12 Cursor Acquisition (CAQ) Button. The CAQ

• PF ZONE

button allows for rapid selection of points/icons on the TSD

to set as an acquisition source. When the CAQ button is se-

• NF ZONE

lected the crewmembers can use the cursor to select any of

• PF/NF ZONE

the following on the TSD page for use as acquisition source:

• RFHO

• Waypoints, Hazards, Control Measures

• PP REPORT

• Pre - planned or Stored Targets/Threats

• FARM REPORT

• FCR Detected Targets

When the message received is one of the following, se-

• RFI Detected Targets

lecting the IDM callsign will automatically switch to the

• A Terrain TRN location on the TSD selected using

RCVD MSG page of the ATHS-TACFIRE. See figure

the cursor

3A-89A in paragraph 3A.71.6 for more information.

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

3A-108

Change 3

TM 1-1520-251-10

• FREE TEXT TAC

• BDA REPORT TAC

• FARM REPORT TAC

• PP QUERY TAC

• PP REPORT TAC

• MAYDAY REPORT TAC

• MOVE COMMAND TAC

• SPOT REPORT TAC

• NEG SPOT RPT TAC

• AIR FIRE RQST TAC

• ARTY INTELGRID TAC

• ARTY FIRE RQST TAC

LBA5243A

• MSG TO OBSERVER TAC

Figure 3A-91B. SA Selected On

• OBSERVER READY TAC

3A.79.18 Heading (HDG) Button. The system displays

the HDG button when the primary EGI estimated heading er-

When the message received is one of the following, se-

ror is greater than 10 degrees. The HDG button is displayed

lecting the IDM callsign will cause the appropriate symbol

in WHITE. Selecting the HDG button brings up the HEADING

to display on the TSD.

button which is used to enter a new heading.

a. HEADING Button. The HEADING button is used

• SPOT REPORT

to enter the correct aircraft heading through the KU. An UPT

button is displayed when the new heading has been entered.

• SITREP

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

• AIR FIRE MISSION

is used to command the system to update both EGIs with

the aircraft heading entered with the HEADING button.

• MSG TO OBSERVER

3A.79.19 PSN Button.

The PSN button is displayed

• OBSERVER MSN UPDT

in WHITE. The system displays the PSN update button

when the estimated radial position error from the primary

3A.79.16 Radar Jammer (JAM) Button. This button is

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

only displayed when the jammer is turned ON. Selecting

will cause the POSITION button to be displayed.

the JAM button toggles the radar jammer between STBY

and OPER.

a. POSITION Button. The POSITION button is used

to enter the correct LAT/LONG or UTM coordinates through

NOTE

the KU. Selecting the POSITION button will arm the KU for

entry of the new coordinates. The system will accept LAT/

Situational Awareness (SA) information is pro-

LONG or UTM coordinate data, with or without the entry of

vided by the IDM. The aircraft must be logged

the datum. If a coordinate is entered without a datum, then

on to the TI in order to receive SA data.

the system assumes whatever the current datum being flown

is what the coordinate being entered is in. Rather than enter-

3A.79.17 Situational Awareness (SA) Button. See

ing the coordinates using the KU, the crew can also select

para 3A.87.3d and fig 3A-91B for a description of this but-

any coordinate point (waypoint, hazard, control measure, or

ton.

stored target/threat) using the cursor control. The system

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

Change 3

3A-109

TM 1-1520-251-10

loads the UTM coordinates for the selected point. If a coordi-

3A.79.26 Aircraft Heading Status Window. The air-

nate point is not selected, the cursor can be used to pick any-

craft heading status window is displayed at the top center

where on the map. The system loads the UTM coordinates of

of the format.

that location. A UPT button is displayed when the new coordi-

nates have been entered.

3A.79.27 Grid Status Window. The grid status is dis-

played in the upper right corner of the format when GRID

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

is selected from the MAP page. The status window shows

ton is used to command the EGIs to update their present

the distance (in KM or NM as selected via the FLT SET

position with the new coordinates entered using the POSI-

page) between the grid lines.

TION button.

3A.79.28 Map Frozen Cue. The TSD map frozen cue

3A.79.20 PHASE Button. The PHASE button allows

(fig 3A-92) is a bold dashed and a frozen ownship symbol

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

at the centered/ decentered location, to indicate the map

mode of operation. The mode of operation affects which

is not in a dynamic state. The dynamic ownship (CYAN),

information is presented on the TSD page and which op-

TADS footprint, and FCR footprint will continue to move

tions are available on the SHOW page.

about the viewable area, and the heading and waypoint

information will provide continuous real - time situational

3A.79.21 Battle Area Management (BAM) Page But-

awareness. The following control selections cause the

ton. Selection of the BAM button will cause the battle

map to freeze:

area management page to be displayed.

•

BAM page button

3A.79.22 MAP Button. Selection of the MAP button

• CAQ button

will cause the MAP page to be displayed.

• FRZ button

3A.79.23 Route (RTE) Page Button. Selection of the

RTE button will cause the route page to be displayed.

• PAN buttons

NOTE

3A.79.24 Point (POINT) Page Button. Selection of the

POINT button will cause the point page to be displayed.

TSD Map Frozen Cue is in place until Prima-

ry EGI alignment is complete.

3A.79.25 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

waypoint letter identifies the active destination point type,

which can be a waypoint “W”, hazard “H”, control measure

“C”, or a target/threat “T”. The next waypoint number will

be a number form 1 to 99 (depending on the point type).

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.

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

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

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

LBA5062A

d. Ground Speed. If the current calculated ground

speed is valid, it will be displayed in kts.

Figure 3A-92. TSD Map Frozen Cue

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

3A-110

Change 3

TM 1-1520-251-10

3A.79.29 Next Waypoint Heading Status Win-

3A.79.33 Message to Observer Status Window. The

dow. The next waypoint heading status window is dis-

message to observer status window is displayed in the

played at the bottom center of the format.

center right of the format of the TSD, RPT, ARTY, and AF

pages, and can be displayed or removed from display via

3A.79.30 Cursor Location Status Window. The cursor

cursor or button selection. The status window is not

location status window is displayed in the lower center of the

enabled for display when a check fire-target or check

format. The status window displays the cursor position in

fire - all condition is in effect.

UTM. If UTM is not valid, LAT/LONG coordinates will be

used. As the aircraft moves or as the cursor is moved over

the TSD map the cursor position will update and indicate the

3A.79.34 Spot Report Status Window. The spot report

cursor position’s MSL Altitude of the terrain if DTED is avail-

status window is displayed in the upper portion of the format

able for that area. If DTED is not available, the altitude will be

of the TSD, RPT, and ARTY pages. It can be displayed or

displayed as “?”. Range from the ownship is displayed in KM

removed from display via cursor or button selection.

or NM. If the distance is greater than 1000KM or 1000NM, a

“?” will be displayed. When the cursor is moved to an alter-

3A.79.35 Situation Report Status Window. The situ-

nate display, the cursor location status window will display the

ation report status window is displayed in the upper

last cursor position in partial intensity.

portion of the format of the TSD, RPT, ARTY, and AF

pages. It can be displayed or removed from display via

3A.79.31 Present Position Status Window. The pres-

cursor or button selection.

ent status window is displayed in the lower center of the

format when the PP button is selected. The status window

includes the following information:

3A.79.36 Airfire Mission Status Window. The airfire

mission status window is displayed in the upper portion of

• Latitude

the format of the TSD, RPT, ARTY, and AF pages, and

• Longitude

has the property that allows it to be displayed or removed

from display via cursor or button selection.

• UTM coordinate data

• Current Mean Sea Level (MSL) elevation of the

3A.79.37 Time of Flight Not Available Status

terrain below the aircraft

Window. The time of flight not available status window

is displayed in the upper right of the format of the TSD,

NOTE

RPT, ARTY, and AF pages. It is displayed in conjunction

The displayed TOF is initiated after select-

with display of the message to observer status window.

ing the REC button, however, actual TOF is

initiated when message is transmitted.

3A.79.38 Endurance Status Window. The EN status win-

3A.79.32 Observer

Mission

Update Status

dow is displayed in the lower right area of the format to indi-

Window. The observer mission update status window is

cate total fuel endurance time at the present power setting.

displayed in the upper right of the format of the TSD, RPT,

Calculations include fuel in internal, center, and auxiliary

ARTY, and AF pages. It is displayed or removed from display

tanks (if installed). The EN label is displayed in WHITE and

in conjunction with selection for display of the message to

flashes when the total fuel endurance is 20 minutes or less.

observer status window. It is not displayed when the time of

flight not available status window is presented. The status

3A.79.39 Check Fire All Status Window. The check

window is also displayed when projected time of flight for

fire all status window is displayed in the upper center of

artillery rounds indicates time to impact is between 1 and 30

the format of the TSD, RPT, ARTY, and AF pages. It is

seconds.

displayed when the check fire all condition exists.

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

Change 3

3A-111

TM 1-1520-251-10

• Course and Speed

• UTM Coordinate data

• Latitude and Longitude

• Altitude (MSL in Feet)

3A.79.42 Engage Status Window. The engage status

window is displayed in the upper right of the format of the

ARTY page when all requirements have been satisfied to

allow transmission of an on - call request (OCR) message,

and no OCR has yet been issued. The status window is

also presented on the AF page during the conduct of a re-

mote SAL hellfire mission. It serves as a prompt that a

“SHOT” message has been transmitted and the target

should now be engaged.

3A.79.43 Compliance Request Status Window. The

compliance request status window is displayed in the upper

LBA5258

left corner of the format of the TSD, ARTY, and AF pages. It

is displayed when a compliance request has been issued

with a JVMF message that can be stored from the TSD,

Figure 3A-92A. SA Status Window, Small

ARTY or AF page. COMPLY REQ status window will be dis-

played on the TSD page after receipt of the message if a

3A.79.40 SA Status Window, Small. The small SA

compliance is required. Response to a compliance request

status window (fig 3A-92A) is displayed in the center of

must be initiated via the MSG REC page

the format of the TSD page. It is displayed when a SA icon

is selected. The small SA status window provides infor-

3A.79.44 Wind Direction/Velocity Status Win-

mation about the selected icon. The small SA status

dow. Wind direction and velocity is selectively displayed in

window frame and text are color coded to match the se-

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

lected icon. The status window includes the following in-

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

formation:

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

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

• Friendly, Enemy, or Unknown

3A.80 TSD MAP SYMBOLOGY

• Type

The following paragraphs describe various symbols and

the conditions under which they appear within the TSD

• Subtype

map area. The symbols are displayed in geographic fidel-

• Age (how old the information is)

ity according to the map scale selected. The display of any

particular symbol depends upon the PHASE selection

• Unit ID or URN

and the state of the control selections on the SHOW page.

Also, symbols cannot be displayed on a 3D map. See

3A.79.41 SA Status Window, Large. The large SA

para 3A.87.1, 3A.87.2 and 3A.82.2.

status window is displayed in the center of the format of

the TSD page. It is displayed when the expand icon on a

3A.80.1 Ownship Symbols. The dynamic ownship sym-

small SA status window is selected. The large SA status

bol is displayed in CYAN and represents the helicopter posi-

window provides additional information about the selected

tion within the dynamic mapping area. Specifically, the dot in

icon. In addition to the information included in the small

the center of the ownship symbol depicts the present position

SA status window. The large SA status window frame and

of the helicopter relative to the map symbols. The frozen

text are also color coded to match the additional selected

ownship symbol is displayed in WHITE, with stopped rotors,

icon. The large status window contains the following infor-

and remains at the centered or decentered position as se-

mation:

lected.

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

3A-112

Change 3

TM 1-1520-251-10

3A.80.2 Route Line. The route line is a straight line

d. When on the POINT page with the ADD, EDIT,

connecting the points (waypoints, hazards, and control

DEL, or XMIT button selected and the waypoint/hazard is

measures) in the current route. The route line becomes

currently the active waypoint/hazard.

partial intensity when the active destination point is other

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

than the next point in the current route.

50. There are 6 different waypoint symbols and 4 hazard

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

3A.80.3 Direct-To Line. The route direct-to line is a

ards on the TSD page are always displayed in both

straight line indicating a direct course to the selected point.

phases. Waypoint symbols are always displayed in the

NAV phase and may be displayed in the ATK phase if

CURRENT ROUTE is selected. When the waypoint/haz-

3A.80.4 Grid Lines. Grid lines are displayed when grid is

ard files are loaded from the DTC, a number is stored for

selected on the MAP page. Grid lines are the default for all

each data file saved that indicates the “SAFE SET” for that

maps except CHART 1:50,000 and 1:100,000. The ownship

loaded DTC file (maximum of 25 points). This prevents

is the origin of the grid (except in North-Up/de-centered).

overwriting a ”SAFE SET” file via normal storing proce-

The grid lines are displayed in partial intensity green when no

dures. Data can be deleted from SAFE SET via the DEL

video underlay or map underlay is displayed. If video or map

button or changed from within the ownship via the EDT

underlay is present, grid lines are displayed in black.

button. An incoming IDM message, if elected to be stored,

can also overwrite a SAFE SET. For example: If 10 way-

3A.80.5 Waypoint/Hazard (WPTHZ) Icon. A WPTHZ

points/hazards are loaded through the DTC, and then

icon indicates the location, type and number of a waypoint

point number 11 is stored after DTC loading, the SP will

or hazard stored in the waypoint/hazard coordinate data

not attempt to store a waypoint/hazard with an index less

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

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

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

less than 11, then the SP will do this.

point or hazard symbol. The waypoint/hazard number will

3A.80.6 Control Measure (CTRLM) Icon. A CTRLM

be displayed inverse video when any of the following

icon indicates the location, type and number of a control

conditions exist:

measure stored in the coordinate data files. Friendly control

measure icons are displayed in CYAN and enemy control

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

measure icons are displayed in RED. The control measure

lected and the waypoint/hazard is the currently selected

type and number is usually displayed within the CTRLM icon.

waypoint/hazard.

The point number will be displayed in inverse video when the

point is the currently selected or active point. The control

b. When on the RTE page and the waypoint/hazard is

measure file is made up of 49 points. The valid range for the

the currently selected waypoint/hazard.

point numbers is 51 to 99. Present position responses are

c. When on the POINT page and the waypoint/hazard

stored in C93 through C99 and are displayed on the TSD

is currently the active waypoint/hazard.

with the helicopter icon. (Appx D).

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

Change 3

3A-112.1/(3A-112.2 blank)

TM 1-1520-251-10

3A.80.7 Threat/Target (THRT/TGT) Icon. The THRT/

data files. The designated label indicates the type of LINE

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

icon.

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

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

3A.80.11 AREA Icon. The AREA icon indicates the

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

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

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

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

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

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

digit identifier. The target/threat number will be displayed

center point of the geographic area.

inverse video when the threat has been selected on the

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

3A.80.12 ASE Footprint Symbol. The ASE footprint

symbol is a square border providing a perimeter line or

The valid range for the target/threat numbers is 1 to 56 The

footprint which segregates RLWR (inside) and RFI (out-

FCR target coordinate data is stored in T50 when the CAQ

side) threat symbols. It is automatically displayed on the

button is used to select an FCR target symbol. The coordi-

TSD page when a threat is detected by the RLWR.

nate data for the ATHS air fire mission target is stored in

T51. The JVMF call for fire target grid location is stored in

3A.80.13 TADS Footprint Symbol. The TADS footprint

T52. The JVMF Air Fire Mission target is stored in T53.The

symbol is a GREEN straight line which originates at the

JVMF spot report is stored in T54. The Pilot’s terrain ac-

ownship symbol and changes in length and azimuth to indi-

quisition source is stored in T55 and the Copilot’s in T56.

cate TADS LOS positioning within the map area. The

Targets over 50 do not exist on the DTC and are not trans-

GREEN line changes to a WHITE line when TADS is lasing.

mitted in any of the AFAPD messages. Targets over 50 can-

An open center crosshair symbol displays full intensity at the

not be edited nor can new targets be added/stored into tar-

end of the TADS footprint symbol to provide precise position

gets over 50 via the POINT page. The T51 ATHS TARGET

feedback on the map. The TADS footprint symbol displays

can be deleted when the HFMSN button is not selected.

when TADS is the selected sight for the CPG or either crew-

The SAFE SET also applies to the targets/threats file.

member has linked TADS to his current selected sight.

3A.80.8 ATHS TARGET Icon. The ATHS TARGET

icon is a large octagonal white icon. The ATHS TARGET

3A.80.14 FCR Footprint Symbol. The FCR footprint

icon is displayed around T51 when HFMSN is selected.

symbol is a perimeter of GREEN lines which originates at

the ownship symbol to indicate the FCR scan footprint or

3A.80.9 Message to Observer Symbol. The message

FCR scan azimuth and area of coverage within the map

to observer symbol (fig 3A-93) is a large circular white icon

area. The GREEN lines change to WHITE lines when the

with protruding edges. The large symbol size allows it to be

FCR is scanning. An azimuth tick displays at the midpoint of

centered at the same location as a target/threat while

the arc within the FCR footprint symbol to provide precise

enabling both symbols to be recognizable simultaneously.

azimuth feedback on the map. The FCR footprint symbol

Presentation of the symbol provides feedback regarding the

displays when FCR is the selected sight for either crew-

geographic location of a platform-directed artillery call for

member or either crewmember has linked FCR to his cur-

fire. The symbol can be cursor-selected to open the messa-

rent selected sight.

ge to observer status window when a check fire condition is

not in effect. It is automatically displayed on the TSD page

3A.80.15 FCR Target Symbols. FCR target symbols

when a call for fire mission has been initiated, a message to

within the map area indicate target information detected

observer has been received and stored, and the object loca-

during an FCR scan. Two types of target symbols are dis-

tion resides within the map boundaries.

played: FCR priority target symbols and FCR total target

symbols. FCR priority target symbols representing mov-

ing targets may move due to updated target position from

the radar. The target placement within the map area fol-

lowing each scan will indicate the direction and apparent

rate of movement of those targets. The high priority FCR

targets display full intensity YELLOW; lesser priority tar-

LBA5061

gets are partial intensity YELLOW and half size (maxi-

mum targets displayed is 256). When the map viewing

Figure 3A-93. Message To Observer Symbol

range (default selections, press and release) is:

3A.80.10 LINE Icon. The LINE icon indicates the loca-

• Greater than 25km; the Next to Shoot and Alternate

tion and name of a geographic line stored in the coordinate

Next to Shoot symbols will not be displayed.

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

Change 2

3A-113

TM 1-1520-251-10

• 50km; FCR Priority Targets (Ownship and IDM)

3A.80.18 Airfire Observer Symbol. The airfire ob-

are displayed as small squares (full intensity).

server symbol (fig 3A-96) is identical to the IDM subscrib-

FCR Total Targets (Ownship and IDM) are dis-

er symbol, excepting that the text string displayed below

played as small squares (partial intensity).

indicates “OBS”. The symbol provides operator feedback

regarding the geographic location of the observer for a re-

• Greater than 50km; FCR Priority Targets (Own-

quested hellfire mission. It is automatically displayed on

ship and IDM) will not be displayed. FCR Total

the TSD page when a properly formatted remote hellfire

Targets will not be displayed.

mission has been received and the object location resides

• Greater than 100km; FCR footprint will not be

within the map boundaries. The OBS location resides in

displayed.

the SP only and not in any coordinate file.

3A.80.16 Spot Report Symbol. The spot report

symbol (fig 3A-94) is a large square white icon. The large

symbol size allows it to be centered at the same location

as a control measure while enabling both symbols to be

recognizable simultaneously. Presentation of the symbol

OBS

provides operator feedback regarding the geographic

LBA3103

location of a reported group of entities. The symbol can be

cursor - selected to open the spot report status window. It

is automatically displayed on the TSD page when a spot

Figure 3A-96. Airfire Observer Symbol

report has been received and stored in T54, and the

object location resides within the map boundaries.

3A.80.19 Situation Report Symbol. The situation re-

port symbol (fig 3A-97) is a cyan JVMF subscriber sym-

bol, populated within by the text string “SIT”. The symbol

provides operator feedback regarding the geographic

location of the unit reporting its situation. The symbol can

be cursor - selected to open the situation report status

window. It is automatically displayed on the TSD page

LBA5060

when a situation report has been received and the object

location resides within the map boundaries. The SIT loca-

tion resides in the SP only and not in any coordinate file.

Figure 3A-94. Spot Report Symbol

3A.80.17 Airfire Mission Symbol. The airfire mission

symbol (fig 3A-95) is a large octagonal white icon. The large

JVMF

symbol size allows it to be centered at the same location as

a control measure while enabling both symbols to be

SIT

recognizable simultaneously. Presentation of the symbol

LBA3104

provides operator feedback regarding the geographic

location of targets from an observer-directed request for

hellfire mission. The symbol can be cursor-selected to open

Figure 3A-97. Situation Report Symbol

the airfire mission status window. It is automatically

displayed on the TSD page when a properly formatted re-

3A.80.20 Call for Fire Symbol. The call for fire symbol

mote hellfire mission has been received and stored in T53,

(fig 3A-98) is a large circular white icon. The large symbol

and the object location resides within the map boundaries.

size allows it to be centered at the same location as a

target/threat while enabling both symbols to be

recognizable simultaneously. Presentation of the symbol

provides operator feedback regarding the geographic

location of a platform - directed artillery call for fire. It is

displayed on the TSD page when a call for fire mission

has been initiated and sent via the ARTY page. It may

also be displayed when the MSG button is selected to

LBA3102

CFF. The symbol defaults to the location of the NTS

target, and can be changed to the location of a

Figure 3A-95. Airfire Mission Symbol

target/threat via cursor selection of the desired threat.

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

3A-114

Change 2

TM 1-1520-251-10

Friendly emitter icons are displayed in CYAN and enemy/

gray threat icons are displayed in YELLOW. Stale threat

icons are displayed in partial intensity.

3A.80.24 RLWR Threat Icon Symbol. When a threat

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

LBA3105

played along the inside perimeter of the ASE footprint

symbol within the map area to indicate azimuth (relative

direction) and threat type information on the TSD page.

Figure 3A-98. Call For Fire Symbol

Enemy/gray threat icons are displayed in YELLOW. Stale

threat icons are displayed in partial intensity.

3A.80.21 Check Fire Symbol. The check fire symbol

(fig

3A-99) is a large x - shaped white icon. It is

3A.80.25 Shot - At Icon. This system stores target coor-

superimposed over the message to observer symbol, and

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

is displayed on the TSD page when a call for fire mission

engaged (actual or simulated) with the Hellfire Missile system

has been initiated, a message to observer has been

by the ownship in the ownship file. For RF missile engage-

received and approved, and a mission check fire has been

ments, the coordinates of the NTS target are stored to the

sent via the ARTY page.

shot-at file. For SAL autonomous missile engagements

(LRFD code = missile seeker code), the target coordinates

stored are derived using the CPG’s sight and range source

regardless of which crewmember conducts the engagement.

For SAL remote missile engagements (LRFD missile

seeker code), the target coordinates stored are those last

stored in the shot-at file. If no previous launches have oc-

LBA3106

curred since power up, the latitude, 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

Figure 3A-99. Check Fire Symbol

will be on top of the target symbols if the target was engaged

after the last scan, otherwise it will be below target symbols.

3A.80.22 JVMF Subscriber Symbol. When a JVMF

A total of 16 locations are available in the ownship file.

present position report is received and stored, the transmit-

ting platform is characterized as a helicopter (if platform =

3A.80.26 IDM Shot-At Icon. The IDM shot-at icon is a

Kiowa or Apache) and an IDM subscriber symbol (Appendix

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

C) is plotted on the TSD. Otherwise, the transmitting platform

sents locations where targets have been engaged by air-

is generically reflected as a JVMF subscriber and its position

craft other than the ownship. The IDM provides target

is demarked using the JVMF subscriber symbol (fig

coordinates for storage in the coordinate data shot-at file

3A-100).The JVMF position report is also stored in Control

after being accepted by the crew. A total of 128 locations

Measure point 91.

are available in the IDM shot-at file.

3A.80.27 HSI Icon. The HSI icon is a Magnetic Com-

pass Rose which can be selectively displayed in the NAV

and ATK phases. The HSI is always displayed on the

JVMF

INST/INST UTIL pages.

3A.80.28 Waypoint Approach and Passage Adviso-

LBA5058

ries. When neither crewmember has the dynamic map dis-

played, or the TSD displays are frozen, an advisory message

is displayed on the EUFD when the aircraft is within one min-

Figure 3A-100. JVMF Subscriber

ute of passing a waypoint or upon waypoint passage.

3A.80.23 RFI Threat Icon Symbol. When a threat is

3A.81 TSD (UTIL) PAGE

detected by the RFI, an RFI threat icon symbol is dis-

played along the outside perimeter of the ASE footprint

The TSD UTIL page, (fig 3A-101) can be used to initiate nav-

symbol within the map area to indicate azimuth (relative

igational system alignments, reset the INUs, enable the Dop-

direction) and threat type information on the TSD page.

pler, modify the current datum, and enter system time and

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

Change 2

3A-115

TM 1-1520-251-10

date data. The TSD UTIL page also provides both INUs posi-

The TSD UTIL page provides access to the following

tion confidence.

unique functions:

• T6

TSD UTIL button

• L1

INU1 RESET button

• L2

INU2 RESET button

• L3

PRIMARY button

• L4

ALIGN STATionary button

• L5

ALIGN MOVE button

• L6

DOPPLER button

• R1

ASE AUTOPAGE button

• R2

TIME button

• R3

SYSTEM TIME button

• R4

SYSTEM DATE button

• R6

DATUM button

• B2

Navigation Mode (NAV) button

3A.81.1 INU1/2 RESET Button. The INU1/2 RESET

buttons resets the INU1/2. It is primarily used when the

data from the INU is invalid or inaccurate.

3A.81.2 PRIMARY Button. The PRIMARY button is

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

LBA5057A

cates the active (primary) INU whether selected automatically

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

Figure

3A-101.

TSD UTIL Page

only when both INUs are operational and equal in status.

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

3A-116

Change 3

TM 1-1520-251-10

3A.81.3 ALIGN STATIONARY (STAT) Button. The

3A.81.10 DATUM Button. The DATUM button allows

ALIGN STAT button is displayed only when the state of

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

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

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

secondary INU has a position from the GPS or has been

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

manually entered and that it is ready to initiate a stationary

matic datum updates, based on the current waypoints and

navigation system alignment.

their datums in the current route being flown.

3A.81.4 ALIGN MOVE Button. The ALIGN MOVE but-

ton displayed only when the state of the NAV mode button is

NOTE

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

tion from the GPS or has been manually entered and that it is

When the INU is reset or power is applied to

ready to initiate a moving navigation system alignment.

the INU, the MPD will not display symbols

These are only displayed when on the ground in SEA mode.

that use INU information until the INU deter-

mines that its data is valid.

3A.81.5 DOPPLER Button. The DOPPLER button en-

ables or disables the Doppler.

3A.81.6 ASE AUTOPAGE Button. The ASE AUTO-

3A.81.11 Navigation (NAV) Mode Button. The NAV

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

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

acquiring threat system which causes autopaging of

The primary System Processor (SP), upon generator power

threat warning information. The ASE AUTOPAGE is

up, automatically controls initialization and alignment of the

crewstation independent. The available selections are:

EGIs of the aircraft. Upon system power up, the last NAV

mode stored LAND or SEA, at power down will be selected

• SEARCH

automatically by the SP. The flight crew should confirm the

correct moding of LAND or SEA (SEA-Stationary or Moving)

• ACQUISITION

for the initialization/alignment process based on the current

• TRACK

aircraft configuration. After takeoff, (in-flight) the Navigation

Mode switch is used to select LAND or SEA using the criteria

• OFF

of where the aircraft is to be primarily operated for the mis-

sion. The LAND mode is used when operating primarily over

3A.81.7 TIME Button. The TIME button sets the dis-

terrain. The SEA mode is used when operating primarily over

play mode of time to LOCAL or ZULU.

water. When the LAND or SEA mode selection is made in-

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

3A.81.8 SYSTEM TIME Button. The SYSTEM TIME

the exception of the displayed LAND or SEA mode) but the

button sets the current LOCAL or ZULU time. The ZULU

navigation system will change the weighting of the Doppler

time must be entered before the LOCAL time. When a ZULU

velocity data to provide the best navigational accuracy (most

System Time is entered, the system processor sets its clock

significantly during degraded navigation modes).

to the entered time, and sends this time to the respective pri-

mary and secondary EGIs if their respective GPS is not track-

ing enough satellites. To determine if the GPS used the time,

3A.81.12 POSITION CONFIDENCE Status Win-

monitor the Satellite Status window. If the time entered is

dow. The POSITION CONFIDENCE status window in

used, the respective GPS Satellite ID numbers in the Satellite

the upper area of the page presents position confidence

Status window, will momentarily blank, then reappear.

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

probable radial position error of the position estimate of

3A.81.9 SYSTEM DATE Button. The SYSTEM DATE

latitude and longitude. It is displayed in WHITE when the

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

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

tered, the system processor sets its Date to the entered

is not installed.

system date, and sends this date to the respective primary

and secondary EGIs if their respective GPS is not tracking

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

monitor the Satellite Status window. If the date entered is

3A.81.13 DOPPLER DATA Status Window. The DOP-

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

PLER DATA status window provides the Doppler aiding

ellite Status window, will momentarily blank, then reap-

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

pear.

MEMORY (WHITE).

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

Change 2

3A-117

TM 1-1520-251-10

3A.81.14 SATELLITE Status Window. The SAT-

ELLITE status window provides the satellite number(s)

that the EGI is attempting to track. The box indicates that

a particular satellite is being tracked.

3A.81.15 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.

3A.81.16 KEYS LOAD Status Window. The KEYS

LOAD status window provides the current state of the

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

ing states are valid for display:

• ERASE FAIL (WHITE)

• NONE (WHITE)

• CORRUPT LOAD (WHITE)

• VALID

LBA5056B

• INCORRECT (WHITE)

• VERIFIED

Figure

3A-102.

MAP Page (DIG Map)

• LOADED

GRAY Button. The GRAY maintained option but-

3A.82 MAP PAGE

ton is only displayed when the MAP type is set to DIG.

The MAP page (fig 3A-102) provides the crew with the con-

When the GRAY button is selected, DTED underlay is dis-

played in shades of gray. When GRAY is not selected,

trols for selecting the MAP underlay for display on the TSD

DTED underlay is displayed in shades of green.

and the orientation selection for how the TSD and symbology

are displayed relative to the ownship.

b. GRID Button. Selecting the GRID maintained

3A.82.1 MAP Page - DIG Map. The MAP page with

option button will display grid lines on the TSD. With the

DIG as the selected TYPE (fig 3A-102) displays a map

GRID button selected, the grid status window is displayed

based on DTED elevation posts which can have line and

in the upper right corner of the TSD. GRID will default to

area features overlaid on top of it. This page provides ac-

ON for all maps except CHART 1:50 and CHART 1:100.

cess to the following unique functions:

• T4

GRAY button

c. SLOPE SHADE Button. The SLOPE SHADE

maintained option button is only displayed if TYPE is set

• T5

GRID button

to DIG, CHART, or SAT and DTED is available on the

• T6

SLOPE SHADE button

DTC. The SLOPE SHADE button is used to enable/dis-

able slope shading. Slope shading provides a 3D effect to

• L2

TYPE button

DTED data. The SLOPE SHADE button is automatically

• L3

LEVEL button

enabled when the DIG option of the TYPE button is se-

• L3

SCALE button

lected. It is disabled when any other option of the TYPE

button is selected. The “phantom light source” for shading

• L4

COLOR BAND button

is fixed to the upper left corner of the format. For DIG and

• L5

CONTOURS button

Chart maps, the slope shading is based on the level of

DTED corresponding to the SCALE button. For SAT

• L6

FFD button

maps, it always is based on Level 2 DTED. (Slope shad-

• R5

ORIENT button

ing will not be displayed in areas which do not have DTED

• R6

VIEW button

information.)

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

3A-118

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HELICOPTER, ATTACK, AH-64D LONGBOW APACHE. TECHNICAL MANUAL (2002) - page 8