[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"legacy-detail-army-676.60":3},{"code":4,"branch":5,"codeSystem":6,"events":7},"676.60","army","MOS",[8],{"title":9,"status":10,"effectiveFrom":11,"effectiveTo":12,"successors":13,"citations":16,"notes":23},"Staff sergeant in CH-21","converted",null,"1965",[14],{"code":15,"liveCode":11,"name":11},"67S40",[17],{"title":18,"url":19,"accessedAt":20,"sourceDate":21,"locator":22},"U.S. Army Aviation Digest, March 1966, vol. 12, no. 3, “New Enlisted Aviation MOS”","https://archive.org/details/sim_united-states-army-aviation-digest_1966-03_12_3/page/n23/mode/1up","2026-07-30","1966-03","“New Enlisted Aviation MOS,” printed p. 22; PDF p. 24","The article’s prose example maps old MOS 676.60, staff sergeant in CH-21, to 67S40. The scan was visually checked: the third character is the letter S. Change 15 directed active-duty personnel conversion during 1–25 July 1965; effectiveTo is conservatively recorded at year precision rather than assigning one uniform individual conversion date."]