sigh007 发表于 2012-3-29 11:52:27

MIL-S-6551A


                   MIL-S-6551A, MILITARY SPECIFICATION, SEAT, CREW, DOWNWARD EJECTION, AIRCRAFT (21 SEP 1981)., This specification establishes the requirements for two types of aircraft adjustable crew seats for downward ejection.         
         
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