Skip to main content

2A5X4 · Logistics & Maintenance

Refuel/Bomber Aircraft Maintenance

Also known as: Crew Chief

Last updated

Refuel/Bomber Aircraft Maintenance (2A5X4) Airmen at work

At a glance

ASVAB minimums
  • M 47
Security clearance
Secret
Tech school
Sheppard, Texas
Career field size
4,835 Airmen
Possible bases
22 stateside · 5 overseas
Civilian equivalent pay
$30k–$109k
  • U.S. citizenship required
Table of ContentsShow
  1. What does the Refuel/Bomber Aircraft Maintenance career field do?
  2. Duties and responsibilities
  3. Specialty qualifications
  4. Civilian career paths
  5. ASVAB requirements
  6. Entry requirements
  7. Where you could be stationed
  8. Badges & identifiers
  9. Degrees & training plan
  10. Specialties (shred-outs)
  11. Videos, Reddit & resources
  12. Frequently asked questions

What does the Refuel/Bomber Aircraft Maintenance career field do?

Maintains aircraft, support equipment, and forms and records. Performs and supervises flight chief, expediter, crew chief, repair and reclamation, quality assurance, and maintenance support functions. Related DoD Occupational Subgroup: 160000.

Duties and responsibilities

  • Performs sortie generation, ground handling, and servicing operations. Performs aircraft inspections such as preflight, thru-flight, postflight, hourly postflight, special inspections, and phase or isochronal inspections. Advises on problems, maintenance, servicing, and inspection of aircraft and related aerospace equipment. Uses technical data to diagnose and solve maintenance problems on aircraft systems. Interprets and advises on maintenance procedures and policies to repair aircraft and related equipment.
  • Inspects, troubleshoots, and maintains aircraft structures, engines, hydraulic, and other related systems, components, and related equipment. Removes and installs aircraft and engine components. Conducts operational checks and repairs components and systems. Performs ground engine operation. Adjusts, aligns, and rigs aircraft systems. Accomplishes weight and balance functions. Supervises and performs aircraft jacking, lifting, and towing operations.
  • Supervises and performs aircraft, engine, and component inspections. Interprets inspection findings and determines adequacy of corrective actions. Inspects and checks components for clearances, tolerances, proper installation, and operation. Performs pre-use inspections and operates powered and non-powered aerospace ground equipment. Inspects and identifies aircraft corrosion for prevention and repair. Reviews maintenance forms, aircraft records, automated maintenance data systems, and historical reports to ensure complete documentation. Inventories and maintains aircraft equipment.
  • Coordinates maintenance plans and schedules to meet operational requirements. Supervises and assists in launching and recovering aircraft. Reviews maintenance data collection summaries to determine trends and production effectiveness. Performs crash recovery duties. Performs staff and supervisory management functions.

Specialty qualifications

Knowledge. Knowledge is mandatory of: principles applying to aircraft systems; flight theory; hydraulic principles; electrical theory; principles, concepts, and application of maintenance directives and data reporting; using technical data; technical order use; Air Force supply and deficiency reporting procedures; and proper handling, use, and disposal of hazardous waste and materials.

Education. For entry into this specialty completion of high school is mandatory. Completion of related vocational courses is highly desirable.

Training.

  • For award of AFSC 2A534X, completion of a suffix specific basic aircraft maintenance course is mandatory.
  • For award of AFSC 2A574, complete craftsman aircraft maintenance course, if applicable.

Experience. The following experience is mandatory for award of the AFSC indicated:

  • 2A554X. Qualification in and possession of AFSC 2A534X.
  • 2A574. Qualification in and possession of AFSC 2A554X.

Other. The following are mandatory as indicated:

  • For entry into this specialty, the following are mandatory:
  • Normal color vision as defined in AFI 48-123, Medical Examinations and Standards.
  • See attachment 4 for additional entry requirements.
  • For award and retention of these AFSCs:
  • Must maintain local network access IAW AFI 17-130, Cybersecurity Program Management and AFMAN 17-1301, Computer Security.
  • Specialty requires routine access to Tier 3 (T3) information, systems, or similar classified environment. For award and retention of AFSC 2A5X4/X, completion of a current T3 Investigation required IAW DoDM 5200.02, AFMAN 16-1405, Air Force Personnel Security Program, is mandatory.
  • NOTE: Award of the entry level without a completed T3 Investigation is authorized provided an interim Secret security clearance has been granted according to DoDM 5200.02, AFMAN 16-1405.

Civilian career paths

Comparable civilian careers for this field pay roughly $30,060–$108,790 per year (median salaries; varies by role and location):

  • Administrative Services Managers: $98,890
  • Aerospace Engineering and Operations Technologists and Technicians: $68,570
  • Aircraft Mechanics and Service Technicians: $66,440
  • Aircraft Structure, Surfaces, Rigging, and Systems Assemblers: $53,160
  • Aviation Inspectors: $78,400
  • Avionics Technicians: $67,840
  • Career/Technical Education Teachers, Postsecondary: $55,620
  • Electrical and Electronic Equipment Assemblers: $36,390
  • Electrical and Electronics Installers and Repairers, Transportation Equipment: $70,200
  • Electrical and Electronics Repairers, Commercial and Industrial Equipment: $62,010
  • Electromechanical Equipment Assemblers: $36,390
  • Engine and Other Machine Assemblers: $45,770
  • First-Line Supervisors of Mechanics, Installers, and Repairers: $70,240
  • First-Line Supervisors of Production and Operating Workers: $62,850
  • General and Operations Managers: $103,650
  • Hazardous Materials Removal Workers: $45,270
  • Helpers--Installation, Maintenance, and Repair Workers: $31,760
  • Industrial Machinery Mechanics: $55,490
  • Industrial Production Managers: $108,790
  • Inspectors, Testers, Sorters, Samplers, and Weighers: $40,460
  • Maintenance and Repair Workers, General: $40,850
  • Maintenance Workers, Machinery: $50,100
  • Quality Control Systems Managers: $108,790
  • Tire Repairers and Changers: $30,060

ASVAB requirements

To qualify for 2A5X4, you need:

47MMechanical

Enter your scores in the AFSC explorer and this section will check each requirement for you.

Entry requirements

Medical profile (PULHES)Show

PULHES scale: lower numbers mean a stricter medical standard. Tap a letter for what it measures.

1Highest standard2Some limitations that don't affect duty3Significant limitations4Minimum standard
Physical exam typeNon-Flying
Vision requirementsShow
Color visionNormal color vision required
Medical disqualifiersShow

These screened conditions disqualify a candidate for this AFSC:

Acrophobia (fear of heights)ClaustrophobiaEmotional instabilityEntomophobia (fear of insects)Fear of bloodFear of gunsPyrophobia (fear of fire)Speech impedimentTMJ disorder
Education prerequisitesShow
Minimum educationHS Diploma
Security & backgroundShow
Security clearanceSecret
CitizenshipU.S. citizenship required
Major offense convictionDisqualifying

Where you could be stationed

Stateside (22)

  • Altus, Oklahoma
  • Barksdale, Louisiana
  • Birmingham, Alabama
  • Boeing Fld King C, Washington
  • Dyess, Texas
  • Edwards, California
  • Ellsworth, South Dakota
  • Fairchild, Washington
  • JB Langley-Eustis, Virginia
  • JBSA Randolph, Texas
  • Joint Base McGuire-Dix-Lakehurst, New Jersey
  • MacDill, Florida
  • March, California
  • McConnell, Kansas
  • Minot, North Dakota
  • Offutt, Nebraska
  • Robins, Georgia
  • Scott, Illinois
  • Shaw, South Carolina
  • Tinker, Oklahoma
  • Travis, California
  • Whiteman, Missouri

Overseas (5)

  • Andersen, Guam
  • Geilenkirchen, Germany
  • JB Elmendorf-Rich, Alaska
  • Kadena, Japan
  • Mildenhall, United Kingdom

Badges & identifiers

Duty badges

The occupational badge worn by Airmen in this career field.

  • Maintenance Badge

Duty identifiers

Special duty patches and identifiers associated with this AFSC.

  • APG Duty Identifier

Degrees & training plan

While serving in 2A5X4 you can earn associate degrees through the Community College of the Air Force:

The CFETP is the official Air Force document describing this career field's full training pipeline, from tech school through advanced skill levels.

2A5X4 specialties (shred-outs)

This career field splits into 7 specialties — you may be assigned to one of these:

  • 2A5X4AAny C-135/E-3/E-8
    Has its own entry requirements
  • 2A5X4BKC-10
    Has its own entry requirements
  • 2A5X4CKC-46
    Has its own entry requirements
  • 2A5X4DB-52
    Sensitive job code: 2(F)
  • 2A5X4EB-1
    Sensitive job code: 2(F)
  • 2A5X4FB-2
    Has its own entry requirements
  • 2A5X4HB-21

Shred-outs share the 2A5X4 career path; where a specialty sets its own minimums or screens, they're noted above.

Videos, Reddit & resources

2A5X4 videos(6)

These do not reflect official U.S. Air Force views and may contain inaccuracies — negative opinions are often overrepresented online.

Refuel/Bomber Aircraft Maintenance specialists!  #airsupport #airpower #usaf #militaryacademyAF

Refuel/Bomber Aircraft Maintenance specialists! #airsupport #airpower #usaf #militaryacademyAF

MilitaryAcademyAF · 7/6/2025

1 of 6 videos

Reddit discussions(10)

These do not reflect official U.S. Air Force views and may contain inaccuracies — negative opinions are often overrepresented online.

Official links & resources(1)

Researching other jobs too? Every career field's videos and discussions are collected the same way — browse all AFSCs.

Frequently asked questions

What ASVAB score do you need for Refuel/Bomber Aircraft Maintenance (2A5X4)?
You need Mechanical 47+ on the ASVAB to qualify for 2A5X4.
Where can Refuel/Bomber Aircraft Maintenance Airmen get stationed?
2A5X4 Airmen serve at 27 bases: 22 stateside and 5 overseas, including Andersen, Guam, Geilenkirchen, Germany, JB Elmendorf-Rich, Alaska.
Does 2A5X4 require a security clearance?
Yes — Refuel/Bomber Aircraft Maintenance requires a Secret clearance.
Where this data comes from

Most of the data on this page comes from the Air Force Enlisted Classification Directory (AFECD) and recruiter TTMS readouts, which are no longer released publicly. Pulling it together and keeping it accurate takes real time, so I update these pages as often as I can.

Requirements do change between updates. Before you make any decisions, confirm the details with your recruiter. They always have the latest word.