AND LEADING PARTICULARS
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,
(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.
18. FORMS AND RECORDS.
19. REPORTS OF MAINTENANCE AND UNSATIS-
FACTORY EQUIPMENT. Use equipment forms and re-
cords in accordance with instructions in (Air Force) AFTO
Form 29/29A, (Navy) NAVWEPS Form 13070/5, or (Army)
1 10. REPORT OF PACKAGING AND HANDLING DE-
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)
(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
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