[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"legacy-detail-marines-6431":3},{"code":4,"branch":5,"codeSystem":6,"events":7},"6431","marine_corps","MOS",[8],{"title":9,"status":10,"effectiveFrom":11,"effectiveTo":12,"successors":13,"citations":14,"notes":26},"AIRCRAFT ELECTRICAL SYSTEMS TECHNICIAN-TRAINEE","canceled",null,"2006",[],[15,21],{"title":16,"url":17,"accessedAt":18,"sourceDate":19,"locator":20},"MARADMIN 329/06, MOS Manual Changes and Conversions","https://web.archive.org/web/20200803112904id_/https://www.marines.mil/News/Messages/Messages-Display/Article/890514/mos-manual-changes-and-conversions/","2026-07-29","2006-07-20","MARADMIN 329/06, paragraph 1.B(3), enlisted block, lines 140-143",{"title":22,"url":23,"accessedAt":24,"locator":25},"MCO P1200.16, Military Occupational Specialties Manual, 18 Apr 2005 (title source)","https://www.globalsecurity.org/military/library/policy/usmc/mco/p1200-16/mco-p1200-16.pdf","2026-07-30","Figure 3-37, alphabetical listing of enlisted MOSs, printed p. 3-517 / PDF p. 708, MOS 6431 title row","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."]