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Army MOS · Aviation

15D Aircraft Powertrain Repairer

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

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Overview

An Aircraft Powertrain Repairer inspects and performs maintenance on aircraft powertrain systems. They also supervise aviation unit, intermediate, and depot maintenance for those systems.

Minimum ASVAB: MM 104

ASVAB policy: Not policy-reviewed · coverage unknown · as of 2026-10-19

Program scope has not been reviewed.

Policy applicability and coverage of the program's score routes have not been reviewed. Shown-route arithmetic is not an eligibility decision.

Source: smartbook-611-21-ch10c-fy2025 (source date 2025-12). Policy applicability has not been established.

See if you would hit this score: free ASVAB practice test

Core Skills

  • Unit, intermediate, and depot powertrain maintenance
  • Powertrain maintenance inspection and supervision

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Aircraft Mechanics and Service Technicians

Aircraft powertrain maintenance and inspection at unit, intermediate, and depot levels transfer directly to civilian aircraft maintenance work.

How to prepare: Compile documentary evidence of your military maintenance experience for FAA evaluation of the ratings it supports. Air carriers often require a mechanic certificate for hiring, although it is not an FAA requirement for every airline mechanic job.

What the civilian work involves
  • Read and interpret maintenance manuals, service bulletins, and other specifications to determine the feasibility and method of repairing or replacing malfunctioning or damaged components.
  • Maintain repair logs, documenting all preventive and corrective aircraft maintenance.
  • Conduct routine and special inspections as required by regulations.
Civilian tools and software (examples)
  • Access Software AIRPAX

Maintenance Workers, Machinery

Maintaining aircraft powertrain systems provides a mechanical maintenance foundation for repairing and replacing industrial machinery components.

How to prepare: Compare your documented powertrain maintenance experience with machinery maintenance openings and seek hands-on training on the production equipment they use.

What the civilian work involves
  • Dismantle machines and remove parts for repair, using hand tools, chain falls, jacks, cranes, or hoists.
  • Reassemble machines after the completion of repair or maintenance work.
  • Install, replace, or change machine parts and attachments, according to production specifications.
Civilian tools and software (examples)
  • Computerized maintenance management system software CMMS

Training & Development

Choose credentials for your target role. COOL funding markers describe program listings, not a guarantee of eligibility or funding.

Getting Started

  • Mechanic (Airframe & Powerplant)

    Pursue both FAA mechanic ratings to support aircraft maintenance employment.

    Eligibility and preparation: Applicants must be at least 18 and able to read, write, speak, and understand English. The experience route for both ratings requires 30 months concurrently performing duties appropriate to both; alternatives include graduation from an FAA-approved Aviation Maintenance Technician School or completion of the Joint Service Aviation Maintenance Technician Certification Council training course. Knowledge, oral, and practical tests are required.

    For: Aircraft Mechanics and Service Technicians

  • ASTM NCATT Foreign Object Elimination (FOE)

    Develop foreign object prevention knowledge in housekeeping, tool accountability, and material handling for aircraft maintenance environments.

    Eligibility and preparation: Open to all individuals regardless of age, career field, training, education, or experience; no AET prerequisite applies.

    For: Aircraft Mechanics and Service Technicians

Notes & Sources

Evidence for this guidance (6 documents)
  1. Army COOL MOC feed: 15D Aircraft Powertrain Repairer

    [1] data/authority/army-codes.json entry 15D (OSD COOL feed, fetched 2026-07-25); DB rank enlisted, authority codeType enlisted

    Supports: Unit, intermediate, and depot powertrain maintenance, Powertrain maintenance inspection and supervision, Aircraft Mechanics and Service Technicians (O*NET 49-3011.00), Maintenance Workers, Machinery (O*NET 49-9043.00)

  2. O*NET: Aircraft Mechanics and Service Technicians

    [2] O*NET 30.3 occupational data

    Supports: Aircraft Mechanics and Service Technicians (O*NET 49-3011.00)

  3. FAA: Become an Aviation Mechanic

    [3] Requirements and mechanic experience requirements

    Supports: Aircraft Mechanics and Service Technicians (O*NET 49-3011.00), Mechanic (Airframe & Powerplant)

    [5]COOL credential mapping: Mechanic (Airframe & Powerplant) · 15D cached COOL credential feed

    Supports: Mechanic (Airframe & Powerplant)

  4. O*NET: Maintenance Workers, Machinery

    [4] O*NET 30.3 occupational data

    Supports: Maintenance Workers, Machinery (O*NET 49-9043.00)

  5. COOL credential mapping: ASTM NCATT Foreign Object Elimination (FOE)

    [6] 15D cached COOL credential feed

    Supports: ASTM NCATT Foreign Object Elimination (FOE)

    [7]SpaceTEC Partners, Inc.: ASTM NCATT certification information, exam list, and FAQ · Background; Exams Offered (Aircraft Electronics Technician, AET Endorsements, Other ASTM NCATT exams); Frequently Asked Questions; retrieved 2026-09-23

    Supports: ASTM NCATT Foreign Object Elimination (FOE)

  6. ASTM NCATT FOE Elements of Basic Awareness Study Guide (PDF, copyright 2022 ASTM International NCATT)

    [8] Scope (sec. 1) and Significance and Use (sec. 3); retrieved 2026-09-23

    Supports: ASTM NCATT Foreign Object Elimination (FOE)

Defense contractor jobs for 15D

Predecessor codes

Historical codes with documented links to 15D. Each history page explains the change.

68D1Aircraft Powertrain Repairer68D2Aircraft Powertrain Repairer68D3Aircraft Powertrain Repairer

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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