Special Instructions

TM 11-1520-209-ESC

c. Authorized subsystems and components of multiple-aspect

(1) Control Intercommunications Set C-1611( *)/AIC (item 2).

(2) Radio Set AN/ARC-44, fm communications (item 3).

equipment requiring evaluation but which are not available at the organization

(3) Radio Set AN/ARC-54 or AN/ARC-131, fm communication

shall be given the lowest color rating authorized for that item.

d. Equipment covered in this manual which requires serviceability

(witbou'tTSEC/KY-28 or MD-736/A installed) (item 4).

(4) Radio Set AN/ARC-54 or AN/ARC-131 end communications

checks but which is not authorized to the evaluating organization shall not be

Security Set TSEC/KY-28 (item 5).

rated.

(5) Radio Set AN/ARC-54 or AN/ARC-131 and Discrete Signal

e. This equipment is rated on the basis of capability for immediate

Discriminator MD-736/A (item 6).

operation and amount of wear life remaining on limited life components. The

(6) Radio Set AN/ARC-55( *), ubƒ communications (item 7).

rating is not meaningful unless each check is made with the utmost care and

ubƒ

accuracy.

(7) Radio

Set

AN/ARC-SIX

AN/ARC-51BX,

f. Record the evaluation results on DA Form 2404, Equipment

communications (item 8).

Inspection and Maintenance Worksheet, using a separate sheet for each

(8) Radio Set AN/ARC-73( *), vbƒ communications (item 9).

multiple-aspect item of equipment, subsystem or component, including those

(9) Radio Set ARC Type 12 (Transmitter, Radio T-366A/ARC,

evaluated by separately published ESC technical manuals. The blocks will

emergency h/ communications) (item 10).

be completed in accordance with TM 38-750.

(10) Radio Set AN/ARC-134, vbƒ communications (item II).

g. If an URGENT modification work order has not been applied to any

(11) Radio Set AN/ARC-102. b/ communications (item 12).

authorized equipment, the equipment and the system will be rated "RED".

(12) Transponder Set AN/APX-72 or Transponder Set AN/APX44

h. Subsystems and components will be separately color rated.

IFF transponder (item 13).

A color rating will be assigned for the overall system.

(13) (Item 14 deleted.)

b Navigation System (Section III).

Special Instructions. The electronic configuration in the aircraft may

(1) Radio Set AN/ARC-44 and Antenna Group AN/ARA-31, ƒm

vary, depending on the year of manufacture, production run, geographical

boming (item 16).

area of operation, etc. The equipment that may be installed in the various

(2) Radio Sat AN/ARC-54 or AN/ARC-131 and Antenna Group

configurations is listed below. Refer to the master log of the aircraft to be

AN/ARA-56. or AS-1922 ƒm boming (item 17).

tested to determine which equipment should be installed in the particular

(3) Radio Receiver R-1041A/ARN, marker beacon (item 18).

aircraft. For' the purpose of ESC evaluations, equipment listed in the master

(4) Direction Finder Set AN/ARN-59(V) radio compass (item 19).

log shall be considered as authorized for the particular aircraft. Equipment

(5) Direction Finder Set AN/ARN-83, radio compass (item 20).

listed below, but not listed in the master log of the aircraft, shall be

(6) Receiving Set.

Radio AN/ARN-30D or AN/ARN-30E vor

considered as unauthorized.

(item 21).

a. Communication System (Section II).