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
76th Flying Training Wing (World War II) 76th Flying Training Wing (World War II) The 76th Flying Training Wing was a wing of the United States Army Air Forces. It was assigned to the Army Air Forces Flying Training Command, and was stationed from 1943-46 at Smyrna Army Airfield, Tennessee. There is no lineage between the United States Air Force 76th Maintenance Wing, established on 5 February 1942 as the 76th Observation Group at MacDill Field, Florida and this organization. The wing was a heavy bomber training wing of Eastern Flying Training Command. Its schools provided four-engine heavy bomber transition training for experienced pilots who were moving