Boeing XB-38 Flying Fortress The XB-38 was destroyed and the project was canceled, in part because the V-1710 engines were needed for other projects such as the Lockheed P-38 Lightning, Bell P-39 Airacobra, Curtiss P-40 Warhawk, North American P-51A Mustang, and Bell P-63 Kingcobra fighters. Boeing XB-38 Flying Fortress The XB-38 Flying Fortress was a single example conversion of a production B-17E Flying Fortress, testing whether the Allison V-1710 V type engine could be substituted for the standard Wright R-1820 radial engine during early World War II. The XB-38 was the result of a modification project undertaken by Boeing and Vega (a subsidiary of
31st Flying Training Wing (World War II) 31st Flying Training Wing (World War II) The 31st Flying Training Wing is an inactive United States Air Force unit. It was last assigned to the Central Flying Training Command, and was disbanded on 30 December 1945 at Fort Worth Army Airfield, Texas. There is no lineage between the current United States Air Force 31st Fighter Wing, established on 6 November 1947 at Turner Army Airfield, Georgia, and this organization. The squadron was a World War II Command and Control unit, its mission to flying training units of the Army Air Forces Training Command. Headquartered at Enid Army Airfield, Oklahoma