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MIL-DTL-87174 Helmet, Flyers Hgu-55/PThis specification covers the requirements for the HGU-55/P flyer\'s helmet.

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MIL-DTL-87174A(USAF)
4.2.2 Items required for windblast test. The following items are required in conducting the
windblast test:
a.
Mask, Oxygen MBU­12/P (MIL­M­87163)
b.
Bayonet Receiver Kit (Drawing 82A5614-10)
c.
Visor Assembly, Lightweight, MBU­12/P (Drawing 81D5189)
d.
Thermal Plastic Liner (TPL), P/N 84D6838
e.
Headform (see 6.7)
4.3
Qualification inspection.
4.3.1 Qualification test samples. The qualification test samples shall be representative of the
production equipment and shall be identified with the manufacturer's part number and such other
information as required by applicable drawings.
4.3.1.1 HGU­55/P helmet assemblies. Unless otherwise modified by the contract or by the
procuring activity (see 6.2), qualification test samples shall be as follows:
a.
Sample A:
(1)
One chin strap assembly with installation hardware (Drawing 80C4782).
(2)
One nape strap assembly with installation hardware (Drawing 80C4784).
(3)
One molded shell of each size, trimmed and drilled, painted, and without
edgeroll (Drawings 81D5332, 81D5333, and 81D5334).
b.
Sample B: Two helmet assemblies of each size specified on the contract or purchase
order that are completely finished and assembled in accordance with this
specification and Drawing 81D5330.
c.
Sample C: Two helmet assemblies of each size specified on the contract or purchase
order that are completely finished and assembled in accordance with this
specification and Drawing 81D5330.
d.
Sample D: Four HGU­55/P helmet assemblies that are completely assembled in
accordance with this specification and Drawing 81D5330. The size of these helmets
may be medium or large depending upon the size of the windblast test headform
required in the conduct of the test.
e.
Sample E: Two HGU­55/P helmet assemblies that are completely assembled in
accordance with this specification and Drawing 81D5330.
f.
Sample F: Two HGU­55/P helmet assemblies that are completely assembled in
accordance with this specification and Drawing 81D5330.
g.
Sample G: Two HGU­55/P helmet assemblies of each size, consisting of
components listed in 3.8.
8



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