Marine Corps (USMC) Enlisted Job Descriptions
OCCUPATIONAL FIELD 63/64, AVIONICS
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, repair/calibration of the radar support equipment.
Marines entering the OccFld receive MOS 6300, Basic Avionics Marine, then progress through specific hard skill MOSs and ultimately are assigned MOS 6391, avionics maintenance chief, or MOS 6491, avionics precision measuring equipment (PME) chief, for MOSs 6492/93/94.
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 level.
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Primary
MOS's
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| MOS | Job Title | Authorized Ranks |
| 6311 | Aircraft Communications/Navigation/Electrical/Weapon Systems Technician-Trainee, OMA | Gysgt to Pvt |
| 6312 | Aircraft Communications/Navigation/Weapon Systems Technician, AV-8 | Gysgt to Pvt |
| 6313 | Aircraft Communications/Navigation/Radar Systems Technician, EA-6 | Gysgt to Pvt |
| 6314 | Unmanned Aerial Vehicle (UAV) Avionics Technician | Gysgt to Pvt |
| 6316 | Aircraft Communications/Navigation Systems Technician, KC-130 | Gysgt to Pvt |
| 6322 | Aircraft Communications/Navigation/Electrical Systems Technician, CH-46 | Gysgt to Pvt |
| 6323 | Aircraft Communications/Navigation/Electrical Systems Technician, CH-53 | Gysgt to Pvt |
| 6324 | Aircraft Communications/Navigation/Electrical/Weapon Systems Technician, U/AH-1 | Gysgt to Pvt |
| 6326 | Aircraft Communications/Navigation/Electrical/Weapon Systems Technician, V-22 | Gysgt to Pvt |
| 6331 | Aircraft Electrical Systems Technician-Trainee | Gysgt to Pvt |
| 6332 | Aircraft Electrical Systems Technician, AV-8 | Gysgt to Pvt |
| 6333 | Aircraft Electrical Systems Technician, EA-6 | Gysgt to Pvt |
| 6336 | Aircraft Electrical Systems Technician, KC-130 | Gysgt to Pvt |
| 6337 | Aircraft Electrical Systems Technician, F/A-18 | Gysgt to Pvt |
| 6386 | Aircraft Electronic Countermeasures Systems Technician, EA-6B | Gysgt to Pvt |
| 6391 | Avionics Maintenance Chief | MGySgt and MSgt |
| 6411 | Aircraft Communications/Navigation Systems Technician- Trainee, IMA | GySgt to Pvt |
| 6412 | Aircraft Communications Systems Technician, IMA | Sgt to Pvt |
| 6413 | Aircraft Navigation Systems Technician, IFF/RADAR/TACAN, IMA | Sgt to Pvt |
| 6414 | Advanced Aircraft Communications/Navigation Systems Technician, IMA | GySgt and SSgt |
| 6422 | Aircraft Cryptographic Systems Technician, IMA | GySgt to Pvt |
| 6423 | Aviation Electronic Microminiature/Instrument and Cable Repair Technician, IMA | Sgt to Pvt |
| 6431 | Aircraft Electrical Systems Technician-Trainee | GySgt to Pvt |
| 6432 | Aircraft Electrical/Instrument/Flight Control Systems Technician, Fixed Wing, IMA | Sgt to Pvt |
| 6433 | Aircraft Electrical/Instrument/flight Control Systems Technician, Helicopter, IMA | Sgt to Pvt |
| 6434 | Advanced Aircraft Electrical/Instrument/Flight Control Systems Technician, IMA | GySgt and SSgt |
| 6461 | Hybrid Test Set Technician, IMA | Sgt to Pvt |
| 6462 | Avionics Test Set (ATS) Technician, IMA | Sgt to Pvt |
| 6463 | Radar Test Station (RTS)/Radar Systems Test Station (RSTS) Technician, IMA | Sgt to Pvt |
| 6464 | Aircraft Inertial Navigation System Technician, IMA | Sgt to Pvt |
| 6466 | Aircraft Forward Looking Infrared/Electro-Optical Technician, IMA | Sgt to Pvt |
| 6467 | Consolidated Automatic Support System (CASS) Technician, IMA | Sgt to Pvt |
| 6468 | Aircraft Electrical Equipment Test Set (EETS)/Mobile Electronic Test Set (METS) Technician | Sgt to Pvt |
| 6469 | Advanced Automatic Test Equipment Technician, IMA | GySgt and SSgt |
| 6482 | Aircraft Electronic Countermeasures Systems Technician, Fixed Wing, IMA | Sgt to Pvt |
| 6483 | Aircraft Electronic Countermeasures Systems Technician, Helicopter, IMA | Sgt to Pvt |
| 6484 | Aircraft Electronic Countermeasures Systems/RADCOM/CAT IIID Technician, IMA | Sgt to Pvt |
| 6486 | Advanced Aircraft Electronic Countermeasures Technician, IMA | GySgt and SSgt |
| 6491 | Aviation Precision Measurement Equipment (PME) Chief | MGySgt and MSgt |
| 6492 | Aviation Precision Measurement Equipment/Calibration and Repair Technician, IMA | GySgt to Pvt |
| 6493 | Aviation Meteorological Equipment Technician, OMA/IMA | GySgt to Pvt |
| 6494 | Aviation Logistics Tactical Information Systems (ALTIS) Specialist | GySgt to Pvt |