Seeing the success of the Navy's NY-1 modification of a PT-1 airframe, the USAAC came to the conclusion that a radial engine was indeed ideal for a trainer. It was reliable and offered a good power-to-weight ratio. Therefore one PT-1 airframe was completed as XPT-2 with a 220 hp (164 kW) Wright J-5 Whirlwind radial engine. The PT-3 aircraft were superseded by the Boeing PT-13 Stearman starting in 1937, but a number were still operational with the Spartan Flying School in Tulsa Oklahoma into the middle of World War II.