[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"legacy-detail-air-force-426X3":3},{"code":4,"branch":5,"codeSystem":6,"events":7},"426X3","air_force","AFSC",[8],{"title":9,"status":10,"effectiveFrom":11,"effectiveTo":12,"successors":13,"citations":16,"notes":23},"Turboprop Propulsion Mechanic","converted",null,"1988-10-31",[14],{"code":15,"liveCode":11,"name":11},"454X0B",[17],{"title":18,"url":19,"accessedAt":20,"sourceDate":21,"locator":22},"Aerospace Propulsion Career Ladder AFSC 454X0A/B (Formerly 426X2/X3)","https://archive.org/details/DTIC_ADA212513","2026-07-30","1989-07-01","Internet Archive full-text OCR lines 335-370; adjudicated excerpt in audit","Current-code formerly relation plus the report explicitly dates the direct classification conversion."]