[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"legacy-detail-air-force-42393":3},{"code":4,"branch":5,"codeSystem":6,"events":7},"42393","air_force","AFSC",[8],{"title":9,"status":10,"effectiveFrom":11,"effectiveTo":12,"successors":13,"citations":16,"notes":23},"Title not stated in source","converted",null,"1977-04-30",[14],{"code":15,"liveCode":11,"name":11},"42399",[17],{"title":18,"url":19,"accessedAt":20,"sourceDate":21,"locator":22},"Aircraft Fuel Systems Career Ladder.","https://archive.org/details/DTIC_ADA161904","2026-07-30","1985-09-01","Internet Archive full-text OCR around char offset 6,988; governing lineage context verified","Exact dated 9-skill-level code change; the predecessor's specific title is not stated. Verified source wording: “The 9-skill level designation was changed from AFSC 42393 to AFSC 42399 on 30 April 1977.”"]