USMC Enlisted Jobs: FIELD 63/64, Avionics

United States Marine Corps Enlisted Job Descriptions and Qualification Factors

A Marine conducts maintenance on the tail of an UH-1N Huey helicopter.
••• Philippine Sea, September 19, 2012 - A Marine from the 31st Marine Expeditionary Unit (31st MEU) conducts maintenance on the tail of an UH-1N Huey helicopter aboard the amphibious assault ship USS Bonhomme Richard (LHD 6). Stocktrek Images / Getty Images

The avionics OccFld includes direct and indirect support of all aviation weapon systems. While there is a large similarity in the skills required to provide this support, the systems being supported are diverse. The following examples are provided: direct support repair accomplished at the organizational maintenance activity (OMA) which is normally accomplished on aircraft, e.g., replacement of the radar antenna on the aircraft; indirect support-repair accomplished at the intermediate maintenance activity (IMA) which is normally accomplished off aircraft, e.g., radar system module repair, and repair/calibration of the radar support equipment.

Marines entering the OccFld receive MOS 6300 for OMA, and MOS 6400 for IMA, Basic Avionics Marine, and then progress through specific hard skill MOSs and ultimately are assigned MOS 6391, Avionics Maintenance Chief. Qualifications initially include technical proficiency in the repair of one or more electronic systems after completion of formal training. As the Marine is promoted, repair and administrative requirements for multiple systems take on an equal importance until the Marine is ultimately placed in a supervisory position. Billets for both repair and administration are varied and extend from the squadron level to staff positions at the wing and force commander, and Headquarters U.S. Marine Corps level.

Below are the Marine Corps Enlisted Military Occupation Specialties which are organized under these occupational fields:


6312 --Aircraft Communications/Navigation/Radar Systems Technician, AV-8

6313 --Aircraft Communications/Navigation/Radar Systems Technician, EA-6

6314 --Unmanned Aerial System (UAS) Avionics Technician

6316 --Aircraft Communications/Navigation Systems Technician, KC-130

6317 --Aircraft communications/Navigation/Radar Systems Technician, F/A-18

6322 --Aircraft Communications/Navigation Electrical Systems Technician, CH-46

6323 --Aircraft Communications/Navigation/ElectricalSystems Technician, CH-53

6324 --Aircraft Communications/Navigation/Electrical/Weapon Systems Technician, U/AH-l

6326 --Aircraft Communications/Navigation/Electrical/Systems Technician, V-22

6332 --Aircraft Electrical Systems Technician, AV-8

6333 --Aircraft Electrical Systems Technician, EA-6

6336 --Aircraft Electrical Systems Technician, KC-130

6337 --Aircraft Electrical Systems Technician, F/A-18

6386 --Aircraft Electronic Countermeasures Systems Technician, EA-6B

6391 --Avionics Maintenance Chief


6412 --Aircraft Communications Systems Technician, IMA

6413 --Aircraft Navigation Systems Technician, I FF/RADAR/TACAN , IMA

6414 --Advanced Aircraft Communications/Navigation Systems Technician, IMA

6422 --Aircraft cryptographic Systems Technician, IMA

6423 --Aviation Electronic Microminiature/Instrument and Cable Repair Technician, IMA

6432 --Aircraft Electrical/lnstrument/Flight Control Systems Technician, Fixed Wing, IMA

6433 --Aircraft Electrical/Instrument/Flight Control Systems Technician, Helicopter, IMA

6434 --Advanced Aircraft Electrical/Instrument/Flight Control Systems Technician, IMA

6461 --Hybrid Test Set Technician, IMA​

6462 --Avionics Test Set (ATS) Technician, IMA

6463 --CASS HP Configuration Operator/Maintainer/Technician, IMA

6464 --Aircraft Inertial Navigation System Technician, IMA

6466 --CASS EO Configuration Operator/Maintainer/Technician/IMA

6467 --Consolidated Automatic Support System (CASS) Technician, IMA

6469 --CASS Test Station IMA Advanced Maintenance Technician, IMA

6482 --Aircraft Electronic Countermeasures Systems Technician, Fixed-Wing, IMA

6483 --Aircraft Electronic Countermeasures Systems Technician, Helicopter, IMA

6484 --CASS EW Configuration Operator/Maintainer/Technician, IMA

6492 -- Aviation Precision Measurement Equipment/Calibration and Repair Technician, IMA

6493 --Aviation Meteorological Equipment Technician, OMA/IMA