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
74th Flying Training Wing (World War II) 74th Flying Training Wing (World War II) The 74th Flying Training Wing was wing of the United States Army Air Forces. It was last assigned to the Eastern Flying Training Command, and was disbanded on 30 December 1945 at Maxwell Field, Alabama. The wing's mission was to provide classification and preflight testing of aviation cadets. It was one of three such centers, the others being at Maxwell Field, Alabama and Santa Ana Army Air Base, California. The mission of the wing was to provide both Classification and Preflight stage training to air cadets which had completed Training Command basic indoctrination