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MOS COMPARISON

1A1 vs 9S100

Flight Engineer (USAF) vs Scientific Applications Specialist (USAF)

Intel

Two AFSCs, one BX, one shared and inexplicable confidence that they're in the best branch. The dorms ARE nice though.

If a 1A1 could go back to MEPS, they'd want to know: your career field is slowly being automated out of existence — the newer aircraft don't have a flight engineer station, which means the Air Force has decided computers can do your job. If a 9S100 had the same time machine: air Force Research Laboratory work at Wright-Patterson, Edwards, Kirtland, or Rome puts you at the center of genuinely interesting technical challenges with national security implications. Neither was briefed on any of this. Both would've appreciated the heads-up. The career counselor who presented both of these with equal enthusiasm deserves a performance award.

1A1Air Force
Flight Engineer
Overall ratingNo reviews yet
Do It Again
Civilian Pay
$135K
9S100Air Force
Scientific Applications Specialist
Overall ratingNo reviews yet
Do It Again
Civilian Pay
$108K
Head to Head
1A1
9S100
Getting In
ASVAB Line Scores
M 47
E 60G 66
Clearance
Secret
Pay Grade
Enlisted
Enlisted
Enlistment Bonus
Up to $50,000
Training
Training Length
10 wk
16 wk
Pipeline Type
BMT
Training Location
Goodfellow AFB, TX
Day-to-Day
Promotion Speed
Slow
Deployment Tempo
High
Career Field
Operations
Research and Development
After You Get Out
Civilian Median Pay
$135K
$108K
Top Civilian Career
Commercial Pilots
Data Scientists
Credentials Earned
4 certs

After the Uniform

The part the recruiter skips: what each job actually translates to once you're a civilian — and what it pays.

1A1Flight Engineer
Civilian Median Pay
$135K/yr
What It Becomes on the Outside
Commercial PilotsStrong
Job market: Much faster than average (11%)
$135K
Aircraft Mechanics and Service TechniciansRelated
Job market: Faster than average (6%)
$75K
Airline Pilots, Copilots, and Flight EngineersRelated
Job market: Much faster than average (11%)
$239K
Credentials You Walk Away With
Aircrew qualificationFlight Engineer certificationAircraft-specific qualifications (C-130, MC-130, HC-130)SERE
9S100Scientific Applications Specialist
Civilian Median Pay
$108K/yr
What It Becomes on the Outside
Data ScientistsStrong
Job market: Much faster than average (35%)
$108K
Mechanical EngineersRelated
Job market: Average (10%)
$100K
Electrical EngineersRelated
Job market: Average (9%)
$108K

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.

1A1Flight Engineer
What the Recruiter Says

As a Flight Engineer, you'll serve as the aircraft commander's right hand, managing complex aircraft systems on heavy airframes like the C-5 Galaxy and MC-130. You'll master systems engineering, aerodynamics, and emergency procedures, building a skillset that translates directly to civilian aviation careers with major airlines.

What It's Actually Like

You're a flight engineer, which means you're the person who actually knows how the plane works while the pilots focus on flying it. You sit between or behind them monitoring every system — hydraulic pressure, fuel quantity, engine temps, electrical loads — and you know every emergency procedure for an aircraft that has more ways to break than most people have excuses for being late. When something goes wrong at 30,000 feet, the pilots turn around and look at YOU. Not the checklist. You. Because you ARE the checklist. The C-5 Galaxy has more systems than a small city and you know all of them. The MC-130 flies at treetop level at night, and your job is to make sure the aircraft cooperates with this terrible idea. Your career field is slowly being automated out of existence — the newer aircraft don't have a flight engineer station, which means the Air Force has decided computers can do your job. The computers are wrong, and the pilots who've flown with a good FE know it. Your FAA flight engineer certificate and A&P pathway are real, and civilian cargo airlines and charter operations will hire you because you understand aircraft systems at a level that no simulator can teach.

9S100Scientific Applications Specialist
What the Recruiter Says

You'll provide technical expert support to Air Force R&D programs — working in research laboratories and acquisition offices on the systems that define the Air Force's future capabilities. Senior technical positions in Air Force research and development are selective, prestigious, and create direct pathways to defense contractor and government laboratory careers. The technical expertise and clearances are significant market assets.

What It's Actually Like

Scientific R&D support at the senior technical level means you're the experienced technical authority in programs ranging from fundamental research to advanced development. Air Force Research Laboratory work at Wright-Patterson, Edwards, Kirtland, or Rome puts you at the center of genuinely interesting technical challenges with national security implications. The clearance and the specific technical expertise create a post-military profile that defense contractors and national laboratories find specifically useful. The research environment is more academic than operational and the culture reflects the specific blend of military structure and scientific inquiry.

The Real Life

Same dimensions, side by side. 1A1 on the left, 9S100 on the right.

Daily Life
1A1

Pre-flight inspections, in-flight systems monitoring, performance calculations, and emergency management on multi-engine aircraft. Flight engineers are the aircraft's systems expert — you know every switch, gauge, and procedure. When something breaks at 30,000 feet, you are the one who fixes it or decides if the mission continues.

9S100

Training / School
1A1

Tech school at Altus AFB (OK) or Little Rock AFB (AR) is about 5-6 months depending on airframe. Covers aircraft systems, performance engineering, and emergency procedures. Heavy academic load — you must understand hydraulics, electrical, fuel, pressurization, and engines at a deep level.

9S100

Physical Demands
1A1

Moderate. Long flights in noisy, unpressurized aircraft (C-130 variants). Must be able to perform in-flight emergency procedures including manual systems operation. Flight physicals required.

9S100

Where You'll Be Stationed
1A1
Dyess AFB (TX)Little Rock AFB (AR)Kirtland AFB (NM)Hurlburt Field (FL)Yokota AB (Japan)
9S100
The Honest Truth
1A1

Flight engineer is a legacy aircrew position being phased out as the Air Force transitions to newer aircraft with two-pilot cockpits. The recruiter may not emphasize this, but the career field is shrinking. That said, if you get it, the experience is unparalleled — you are the aircraft systems expert, and on older platforms like the C-130H and MC-130, the flight engineer is indispensable. AFSOC flight engineers have some of the most intense and rewarding flying in the Air Force: low-level night missions, special operations insertions, and austere airfield landings. The camaraderie in the aircrew community is tight. Just go in with eyes open about the career field's trajectory and have a plan for retraining or transition.

9S100

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