MIL-H-22059 › Complete Document History
Helmet, Pilot S Protective, Type SPH-1


Obsolete Revision Information:
   NOT - HELMET, PILOT S PROTECTIVE, TY - Nov. 8, 1971
   BASE - HELMET, PILOT S PROTECTIVE, TY - July 27, 1961
   AMENDMENT 1 - HELMET, PILOT S PROTECTIVE, TY - Jan. 1, 1960