Section I. DESCRIPTION AND LEADING PARTICULARS

T.O. 12P4-2APX-142

NAVAIR 16-35C6280-1

TM 11-5841-268-25

SECTION I

AND LEADING PARTICULARS

DESCRIPTION

NOTE

MASTER switch and making related wiring changes. The

replacement switch has a detent mechanism which requires

This technical manual and the prime equipment

the knob to be pulled out before the switch can be set to

covered herein is configured for interservice use

OFF or EMER positions. Beginning with Serial No. 3323

and maintainability by direction of the Depart-

of Contract AF33(657)-14450, the modification was

ment of Defense AIMS System Program Office

incorporated during production.

(DOD AIMS SPO). No changes shall be made to

the equipment or the technical manual without

15. INDEXES OF PUBLICATIONS.

the approval of the DOD AIMS SPO.

1 6. Refer to the latest issue of (Air Force) T.O. 0-1-12,

11. GENERAL.

(Navy) NAVSUP 2002, Section VIII, or (Army) DA Pam

310+ to determine whether there are new editions, changes,

1-2. This publication contains descriptive and maintenance

or additional publications pertaining to the equipment.

information for Control, Transponder Set C-6280(P)/APX,

C-6280A(P)/APX, C-6717/APX, and C-7483/APX. These

1 7. (Army) Refer to the latest issue of DA Pam 310-7 to

units were manufactured under the following contracts:

determine whether there are modification work orders

(MWOs) pertaining to the equipment.

Manufacturer

Type

Contract

Admiral

C-6280(P)/APX

AF33(657)-14550

18. FORMS AND RECORDS.

C-6280A(P)/APX

AF33(657)-14550

Admiral

19. REPORTS OF MAINTENANCE AND UNSATIS-

Admiral

AF33(657)-14550

C-6717/APX

FACTORY EQUIPMENT. Use equipment forms and re-

C-6280(P)/APX

Aircraft

Radio

AF33(657)-16648

cords in accordance with instructions in (Air Force) AFTO

C-6280A(P)/APX

AF33(657)-16648

Aircraft

Radio

Form 29/29A, (Navy) NAVWEPS Form 13070/5, or (Army)

Aircraft

Radio

F33657-68-C-0785

C-6717/APX

TM 38-750.

F33657-68-C-0785

C-7483/APX

Aircraft

Radio

1 10. REPORT OF PACKAGING AND HANDLING DE-

NOTE

FICIENCIES. Fill out and forward DD Form 6 (Report of

Unless defined by type number, the information

Packaging and Handling Deficiencies) as prescribed in (Air

in this manual is applicable to all the transponder

Force) AFR 714, (Navy) NAVSUP Publication 378, or

set controls listed. Also, the use of the common

(Army) AR 700-58.

name "transponder set control" refers to all

111. DISCREPANCY IN SHIPMENT REPORT (DISREP)

units.

(SF 361). Fill out and forward Discrepancy in Shipment

Report (DISREP) (SF 361) as prescribed in (Air Force)

13. This manual contains information for organizational,

AFM 75-34, (Navy) NAVSUP Publication 459, or (Army)

field, intermediate, direct and general support, and depot

maintenance, and an illustrated parts breakdown, for the

AR 55-38.

transponder set controls listed in paragraph 12. It includes

112. REPORTING OF IMPROVEMENTS FOR EQUIP-

instructions appropriate to direct and general support and

MENT MANUALS. Reporting of errors, omissions, and

depot for troubleshooting, testing, and repairing the equip-

recommendations for improving this publication by the in-

ment, and replacing maintenance parts. It also lists tools,

dividual user is encouraged. Reports should be submitted on

materials, and test equipment for direct and general support

(Air Force) AFTO Form 22, (Navy) NAVWEPS Form

and depot maintenance. Detailed functions of the equipment

13070/5, or (Army) DA Form 2028. DA Form 2028 will

are discussed in Section IV.

be forwarded direct to Commanding General, U.S. Army

14. Except for Serial No. 1 through 3322 of Control,

Electronics Command, ATTN: AMSEL-ME-NMP-AD, Fort

Monmouth, New Jersey 07703.

Transponder Set C4280(P)/APX, manufactured under Con-

tract AF33(657)-14550, the information in this manual is

113. PURPOSE OF EQUIPMENT.

applicable to all the transponder set controls listed in para-

graph 12. When these transponder set controls have been

114. All the transponder set controls perform the same

function. They are designed as a universal control for the

modified in accordance with T.C.T.O. 12P4-2APX-508 or

AVC-900, the information in this manual also applies to

various IFF/SIF transponders used in aircraft configurations.

them. The modification consists of the replacement of the

Each unit provides the operating controls and indications

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