PB4Y Liberator airplane model. The PB4Y-1 was a navalized version of the USAAF B-24. It had its origin in a deal cut in mid-1942 between the Navy and the USAAF. The Navy was anxious to acquire a long-range, land-based heavy maritime reconnaissance and patrol aircraft capable of carrying a substantial bombload, but the USAAF had always resisted what it perceived as an encroachment into its jealously guarded ,land-based bomber program. However, the USAAF needed an aircraft plant to manufacture its next generation of heavy bombers, the B-29 Superfortress. , ,It just so happened that the Navy owned a plant at Renton, Washington, which ,was at that time being operated by Boeing for the manufacture of the PBB-1 Sea Ranger twin-engine ,patrol flying boat. The Army proposed that the Navy cancel the Sea Ranger program and turn over the Renton factory to them for B-29 production. In exchange, the USAAF would get out of the antisubmarine warfare business and would drop its objections to the Navy's operation of land-based bombers. The Navy would get "navalized" B-24 Liberators, B-25 Mitchells, and B-34/B-37 Venturas for use in maritime reconnaissance and antisubmarine warfare. The Navy readily agreed to this arrangement. , ,Mahogany Wood. Wingspan 21 1/4 inches, Length 12 3/4 inches.