Bureau of Aeronautics allowance list of publications and forms for naval air stations, aircraft carriers, battleships, destroyers, cruisers, seaplane tenders, carrier based squadrons, patrol squadrons, photographic squadrons, utility squadrons, transport divisions, aviation units attached to BB, DD, CA and CL, hedrons, hedron detachments (PATSU), CASUS, naval air stations (lighter than air), LTA squadrons and marine air activities, section K.