AD vs AS
Aviation Machinist's Mate (USN) vs Aviation Support Equipment Technician (USN)
Two ratings on the same ship, two completely different answers to "how was deployment?" at the same homecoming.
AD (Aviation Machinist's Mate) meets AS (Aviation Support Equipment Technician) in the only comparison that uses verified data instead of recruiter vibes. Both are still accumulating enough data for a fair fight. The categories below are where the comparison gets interesting. Two branches that could not agree on a lunch spot, let alone a joint operational concept.
After the Uniform
The part the recruiter skips: what each job actually translates to once you're a civilian — and what it pays.
Salary data from the U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics program. A guide, not a guarantee.
Recruiter vs. Reality
The pitch versus what people who actually did the job report back.
“You'll maintain jet engines on Navy and Marine Corps aircraft — F404s in the F/A-18, F135s in the F-35, T56 turboprops in the E-2C. The technical depth of naval aviation powerplant maintenance is significant, and the FAA Powerplant certificate is directly achievable through military engine experience. Major airlines and MRO facilities are in a persistent competition for A&P-certified technicians with military jet engine experience, and they recruit at Navy transition events specifically for this reason. The pay for an A&P powerplant specialist at a major airline MRO is real money. The Navy is paying for the training.”
You will become intimately familiar with the GE F414 and the Pratt & Whitney F100 in ways the engineers who designed them never intended, primarily because you are maintaining them with fewer people and less sleep. Your workspace is either a flight deck on a CVN in 40-knot winds or a hangar bay where the temperature is 20 degrees hotter than outside due to reasons nobody can explain. A jet engine inspection that the manual says takes four hours will take twelve because three of the required tools are on another aircraft, one is missing entirely, and the work order has a typo. You will develop a second sense for the difference between a normal engine noise and an 'oh no' engine noise. Civilian aviation maintenance is absolutely within reach — A&P certification pathway is legitimate — but the Navy will wring every possible flight hour out of you first. The moment you marshal a jet that you fixed and watch it come off the waist cat is the closest thing to pride the aviation world offers.
The Real Life
Same dimensions, side by side. AD on the left, AS on the right.
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Inspecting, troubleshooting, and repairing aviation ground support equipment before the aircraft ever start engines. Your morning begins with the daily GSE inspection log — verifying aircraft start units, electrical power units (EPUs), hydraulic test stands, nitrogen servicing carts, wheel and brake service carts, and fuel servicing equipment are mission-capable. When GSE fails on the flight line between flight events, you are the one who responds, diagnoses the fault, and either clears it or gets the equipment red-X'd before anyone connects it to an aircraft. You do not work on aircraft — that is AM, AE, and AT. You maintain the gear that makes the aircraft maintainable.
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A School at NATTC NAS Pensacola (FL) runs roughly 6-8 months depending on the specialty track and NEC pipeline. You cover hydraulic theory and systems, electrical power units, aircraft start systems (MD-3 and variants), nitrogen servicing, wheel and brake assemblies, and fuel servicing equipment. Pensacola is a quality training location and the coursework is hands-on; the learning curve is steep for students without a mechanical background going in.
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Moderate to high. You work in the flight-line and hangar-bay environment — jet blast, high noise, hydraulic and fuel hazards, heavy GSE components, and on a carrier the physical tempo is relentless. On the flight deck during flight ops you wear your float coat, cranial, and eye protection and stay heads-on-a-swivel at all times.
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The recruiter will tell you AS is aviation — and it is, just not in the way most recruits picture. You are not turning wrenches on the F/A-18. You are maintaining the aircraft start units, hydraulic stands, and electrical power carts that the aircraft maintainers cannot do their job without. That matters enormously, and the career consequences of a GSE failure on the flight line are real: bad GSE grounds aircraft, scrubs missions, and in the worst cases kills people. What the recruiter won't tell you: AS is chronically undermanned at sea commands, which means you will see more carrier deployments than many aviation rates, the flight-line environment is genuinely hazardous in ways that accumulate over a career, and the civilian market for airport GSE mechanics is strong but not glamorous. If you want to work on aircraft, fight for AM or AE. If you want a technically solid, physically demanding career with a clear civilian translation to airport ground operations, AS is legitimate and underrated.
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