MIL-S-81771A, MILITARY SPECIFICATION: SEAT SYSTEM; AIRCREW, CRASH RESISTANT; GENERAL SPECIFICATION FOR (30 PR 1975) [S/S BY JSSG-2010-7]

MIL-S-81771A, MILITARY SPECIFICATION: SEAT SYSTEM; AIRCREW, CRASH RESISTANT; GENERAL SPECIFICATION FOR (30 APR 1975) [S/S BY JSSG-2010-7]., This specification covers the requirements for two types of aircrew adjustable seats.