15D Aircraft Powertrain Repairer
Verified ASVAB line score requirement from the official Army specification. Aviation: Aircraft repair, avionics, air traffic control and aviation operations.
MM ≥ 104
Initial award, Chapter 10c; score requirement verified in official Army PDF.
Verified
Source checked 2026-09-12
What this means
Official Army Chapter 10c PDF lists minimum MM 104; OPAT, training, clearance and other requirements remain separate.
The score listed above is the minimum line score threshold from the official Army MOS specification. Meeting this threshold does not guarantee enlistment — additional requirements such as OPAT physical testing, security clearance, medical screening, and training availability are evaluated separately by your recruiter. To see how MM 104 compares with the rest of the Army, read what counts as a good ASVAB score.
Which ASVAB subtests count toward 15D
15D is judged on one line score. The subtests listed below are the Army's nominal definition of each aptitude area from DA PAM 611-21, Military Occupational Classification and Structure, Table 10-1 (ASVAB aptitude area composites). The score actually printed on your report is computed on the 1997 scale as a weighted sum of seven standard scores (DMDC 2004, Table 2.7) and may give weight to subtests outside the nominal list; GT is the exception and equals AR + VE exactly. Use the line score on your report, or compute it from your standard scores.
NO + AS + MC + EI
NO (Numerical Operations), AS (Auto and Shop Information), MC (Mechanical Comprehension), EI (Electronics Information).
NO is a legacy subtest no longer administered; the Army scores MM from the remaining subtests.
If your score is below MM ≥ 104
Your ASVAB report lists every line score, so start by finding MM and noting the exact gap. A small gap in one composite is usually closed by improving the subtests that feed it, and each subtest counts toward several line scores at once.
Practice on this site: AS (Auto and Shop Information), MC (Mechanical Comprehension), EI (Electronics Information). Start a AS, MC, EI practice set for 15D →
Not testable: NO no longer appear on the ASVAB, so there is nothing to practice for them.
A retest is subject to Army retest rules and timing; ask your recruiter before planning around one. Practice results here are raw scores and never convert into an official line score.
Aviation jobs ranked by ASVAB threshold
All 13 currently verified CMF 15 entries on this site, ordered by the lowest score that satisfies each rule. 15D sits at position 7: 5 jobs list a lower threshold and 0 list a higher one. Thresholds in different line scores are not directly comparable.
| # | MOS | Job | ASVAB requirement | Checked |
|---|---|---|---|---|
| 1 | 15P | Aviation Operations Specialist | ST ≥ 91 | 2026-09-12 |
| 2 | 15N | Avionic Mechanic | EL ≥ 93 | 2026-09-12 |
| 3 | 15R | AH-64 Attack Helicopter Repairer | MM ≥ 99 | 2026-09-12 |
| 4 | 15Q | Air Traffic Control Operator | ST ≥ 101 | 2026-09-12 |
| 5 | 15W | Unmanned Aircraft Systems Operator | SC ≥ 102 | 2026-09-12 |
| 6 | 15B | Aircraft Powerplant Repairer | MM ≥ 104 | 2026-09-12 |
| 7 | 15D | Aircraft Powertrain Repairer | MM ≥ 104 | 2026-09-12 |
| 8 | 15E | Unmanned Aircraft Systems Repairer | EL ≥ 93 and MM ≥ 104 | 2026-09-12 |
| 9 | 15F | Aircraft Electrician | MM ≥ 104 | 2026-09-12 |
| 10 | 15G | Aircraft Structural Repairer | MM ≥ 104 | 2026-09-12 |
| 11 | 15H | Aircraft Pneudraulics Repairer | MM ≥ 104 | 2026-09-12 |
| 12 | 15T | UH-60 Helicopter Repairer | MM ≥ 104 | 2026-09-11 |
| 13 | 15U | CH-47 Helicopter Repairer | MM ≥ 104 | 2026-09-12 |
Other Army jobs judged on MM (Mechanical Maintenance)
Because these MOS share the MM line score with 15D, the same subtests decide your standing for all of them. Jobs at or below 15D's threshold are fallback options; jobs above it are what a higher MM unlocks.
- 15E Unmanned Aircraft Systems Repairer — EL ≥ 93 and MM ≥ 104
- 15F Aircraft Electrician — MM ≥ 104
- 15G Aircraft Structural Repairer — MM ≥ 104
- 15H Aircraft Pneudraulics Repairer — MM ≥ 104
- 15T UH-60 Helicopter Repairer — MM ≥ 104
- 15U CH-47 Helicopter Repairer — MM ≥ 104
Next steps
- Check your scores against this and other Army jobs
- Practice AS, MC, EI, the subtests that feed the MM score
- Browse all Aviation jobs in CMF 15
- Confirm the current requirement with your recruiter before relying on this information
Frequently asked questions
What ASVAB score do I need for 15D Aircraft Powertrain Repairer?
The verified score threshold recorded for this MOS is MM ≥ 104. Other requirements such as OPAT, clearance, and training are separate.
Which ASVAB subtests count toward the MM score for 15D?
MM (Mechanical Maintenance) is nominally NO + AS + MC + EI. The reported score is a weighted sum of seven standard scores on the 1997 scale, so subtests outside that list can also count. Compare the line score printed on your ASVAB report against MM ≥ 104, or compute it from your standard scores with the calculator.
Is AFQT enough to qualify for 15D?
No. AFQT is used for general enlistment qualification. 15D uses specific Army line scores (MM ≥ 104), and the line-score rule shown here is the verified threshold. These are composite scores calculated from ASVAB subtests and are different from your AFQT percentile.
Are there Aviation jobs with a lower ASVAB threshold than 15D?
Yes. Among the 13 currently verified CMF 15 entries on this site, 5 list a lower entry threshold than 15D and 0 list a higher one. The ranked table on this page shows each requirement; a lower threshold in a different line score is not directly comparable to MM ≥ 104.
Where does this 15D score requirement come from?
The verified threshold is recorded from the official Army MOS specification document. Initial award, Chapter 10c; score requirement verified in official Army PDF. Source checked on 2026-09-12.