NPFC - MIL-DTL-87174
HELMET, FLYER’S HGU-55/P
|Publication Date:||8 September 2020|
This specification covers the requirements for the HGU-55/P flyer's helmet.
The helmets are of the following types and sizes, as specified (see 6.2).
The types of the helmet assemblies are as follows:
I Standard Helmet Assembly (low speed with MBU-12/P trim, visor assy)
II Light Weight Helmet Assembly (low speed with MBU-12/P trim visor assy)
III Light Weight Helmet Assembly (high speed with MBU-20/P visor assy)
IV Light Weight Helmet Assembly (low speed with MBU-20/P visor assy)
This helmet assembly is intended to be worn by military members of the United States Air Force for use in high performance military aircraft.