MIL-H-87140A (NOTICE 1), MILITARY SPECIFICATION: HELMET, FLYER'S HGU-36/P (31 MAR 1997)

MIL-H-87140A (NOTICE 1), MILITARY SPECIFICATION: HELMET, FLYER'S HGU-36/P (31 MAR 1997)., This specification covers the HGU-36A/P flyer's helmet, which of one type, and provided in sizes medium and large.