Used on an air combat system, flyer's helmet
NSN 5998-01-027-1809
NSN 5905-00-189-2949
NSN 5990-01-068-1651
NSN 5999-01-359-1973
NSN 5910-01-450-3937
NSN 5990-00-672-1376
NSN 6620-01-543-3866
NSN 5996-01-653-4930
NSN 6650-01-375-6233
NSN 6135-00-196-5267
NSN 5835-01-399-5820
NSN 5965-00-959-4910