MIL-H-6479 › Complete Document History
Helmet, Flying, H-71/Aic Head Set, TYPEA-13 (See MIL-H-27856)
Obsolete Revision Information: |
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NOT - HELMET, FLYING, H-71/AIC HEAD - Nov. 25, 1963
REVISION B - HELMET, FLYING, H-71/AIC HEAD - Jan. 1, 1960 |