MIL-S-25073A, MILITARY SPECIFICATION: SEAT, AIRCRAFT (07-MAY-1970)

MIL-S-25073A, MILITARY SPECIFICATION: SEAT, AIRCRAFT (07-MAY-1970)., This specification covers two types of adjustable, long range aircraft pilot’s seats. Pilot seats covered by this specification shall be of the following types. Type I. - For use in long-range helicopters; AND Type II. - For use in cargo, transport, and multi-engine trainer aircraft.