Boeing YB-40 Flying Fortress March 1944. All of the aircraft were sent to reclamation, mostly at RFC Ontario in May 1945, being broken up and smelted. (A couple of the YB-40s can be seen in the 1946 movie "The Best Years of Our Lives", in the famous scene shot at the Ontario "graveyard".) No airframes were sold on the civil market. Boeing YB-40 Flying Fortress The Boeing YB-40 Flying Fortress was a modification for operational testing purposes of the B-17 Flying Fortress bomber aircraft, converted to act as a heavily armed gunship for other bombers during World War II. At the time of its
31st Flying Training Wing (World War II) covered with a hood for "Blind" instrument flying training. Glider pilot schools used Aeronca TG-5As, Taylorcraft TG-6As, and Piper TG-8As unpowered glider conversions of powered light observation aircraft which had similar characteristics to the military gliders under development. 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