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• March 5, 2017 Create Date
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Radar Signal Detecting Set AN-APR-39(V)1

1-1. SCOPE. 
Type of Manual: This manual covers Aviation unit (organizational) level maintenance. Related 
maintenance manuals TM 11-5841-283-34-1 and -2 classified supplement this manual and contain 
instructions for AVIM, (direct support) maintenance. 
Equipment Name and Model Number: Radar Signal Detecting Set 
NSN 5841-01-023-7112. 
Purpose of Equipment: The primary purpose of the Radar Signal Detecting Set is to 
receive and display to the aircraft pilot, or other observer, information concerning radar and 
tracking signals which may be a potential threat. The radar signal detecting set can be 
installed in either rotary or fixed wing aircraft.

1-2. MAINTENANCE FORMS, RECORDS, AND REPORTS. 
REPORTS OF MAINTENANCE AND UNSATISFACTORY EQUIPMENT 
Department of the Army forms and procedures used for equipment maintenance will be those 
prescribed by TM 38-750, The Army Maintenance Management System (TAMMS). Navy personnel will 
report maintenance performed utilizing the Maintenance Data Collection Subsystem (MDCS) IAW 
OPNAVINST 4790.2, vol. 3 and Unsatisfactory Material/Conditions (UR submissions) IAW OPNAVINST 
4790.2, vol. 2, chapter 17. 
REPORT OF PACKAGING AND HANDLING DEFICIENCIES 
Fill out and forward SF-364, Report of Discrepancy (ROD), as prescribed in AR 735-11-2/DLAR 
4140.55/NAVMATlNST 4355.73/AFR 400-541MC0 4430.3E. 
DISCREPANCY IN SHIPMENT REPORT (DISREP) (SF 361) 
Fill out and forward Discrepancy in Shipment Report (DISREP) (SF 361 ) as prescribed in AR 
55-38 INAVSUPINST 4610.33B/AFR 75-181MC0 P4610.19C/DLAR 4500.15.

1-3. DESTRUCTION OF ARMY ELECTRONICS MATERIEL 
Destruction of Army electronics materiel to prevent enemy use shall be in accordance with TM 
750-244-2. 
14. PREPARATION FOR STORAGE OR SHIPMENT. 
Administrative storage of equipment issued to and used by Army activities will have preventive 
maintenance performed in accordance with the PMCS charts before storing. When removing the 
equipment from administrative storage, the PMCS should be performed to assure operational 
readiness. Disassembly and repacking of equipment for shipment or limited storage are covered in 
section VI. 
1-5. REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS. 
If your radar signal detecting set needs improvement, let us know. Send us an EIR. You, the 
user, are the only one who can tell us what you don't like about your equipment. Let us know why 
you don't like the design. Put in on an SF 368 (Quality Deficiency Report). Mail it to Commander, U.S. 
Army Communications-Electronics Command and Fort Monmouth, ATTN: DRSEL-ME-MP, Fort 
Monmouth, New Jersey 07703. A reply will be sent to you. Navy personnel are encouraged to submit 
EIR's through their local Beneficial Suggestion Program.