MIL-H-81735B, MILITARY SPECIFICATION: HELMETS, FLIGHT DECK CREWMAN'S, IMPACT RESISTANT (30 JUL 1992)

MIL-H-81735B, MILITARY SPECIFICATION: HELMETS, FLIGHT DECK CREWMAN'S, IMPACT RESISTANT (30 JUL 1992)., This specification covers the requirements for impact resistant flight deck crewman's helmets and components (see 6.2 b).