Artist depicts a BT-13 In Flight. With retractable landing gear and a powerful engine, the Vultee V-54 basic combat trainer was too lavish for the cash-strapped United States Army Air Corps of 1938. So Vultee redesigned the aircraft and made it less complicated. The first order for 300 new BT-13 Valiants was placed in September of 1939, and it would become the most widely-used American training aircraft of World War Two.
The Vultee BT-13 had a continuous canopy with its crew of two sitting in tandem behind dual controls. It was also equipped with blind flying instruments to teach new pilots the basics of flying at night or in foul weather. BT-13 students soon gave the airplane a nickname which described its most memorable characteristic: Vultee Vibrator.