MIL-H-25758 › Complete Document History
Helmet, Flying Protective, H-149-Aic Headset, Type mb-3 (Use MIL-H-27856)
Obsolete Revision Information: |
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NOT - HELMET, FLYING PROTECTIVE, H-1 - Sept. 23, 1969
REVISION A - HELMET, FLYING PROTECTIVE, H-1 - Jan. 1, 1960 |