Helicopter/Tiltrotor Airframe Mechanic-Trainee
The deletion belongs to the 2006 manual transition. The manual was effective May 15, 2006, but personnel-system implementation was explicitly deferred, and no effective date specific to MOS 6151's deletion was given.
Source extraction notes
The cited source prints the MOS code but not its occupational title; no title was inferred. Enlisted MOS explicitly listed as deleted with no named successor. Do not infer a replacement. The manual is effective 2006-05-15, but personnel/HRDP implementation is explicitly deferred, so effective_to is null. No row-specific effective date is printed; year-only precision reflects the 2006 manual transition.
Source documents (2)
Reviewed September 24, 2026 against references 1 and 2.
- MARADMIN 329/06, MOS Manual Changes and Conversions
1. MARADMIN 329/06, paragraph 1.B(3), enlisted block, lines 140-143 · source dated July 20, 2006 · cited by the explanation
Open source document (opens in a new tab)3.MARADMIN 329/06, MOS Manual Changes and Conversions · event transcription · docs/legacy-data/usmc-mos-conversions.jsonl:86; MARADMIN 329/06, paragraph 1.B(3), enlisted block, lines 140-143
Open source document (opens in a new tab) - MCO P1200.16, Military Occupational Specialties Manual, 18 Apr 2005 (title source)
2. Figure 3-37, alphabetical listing of enlisted MOSs, printed p. 3-520 / PDF p. 711, MOS 6151 title row · cited by the explanation
PDF page 711 (opens in a new tab)