Collection Item Summary:
The Type A-11 intermediate flying helmet was standardized on August 6, 1943 and became one of the most popular and widely utilzied helmets during World War II. There were numerous but minor changes relating to the oxygen mask attachments made during its production run but continued to keep the A-11 designation. The rubber earphone mountings were designated for the Type ANB-H-1 radio reciever. The helmet remained in Air Force service during the Korean War. The Federal Avaition Administration (FAA) continued to use the helmet in high altitude training through the mid-1970s.