Naval Aircraft Factory PT

The Naval Aircraft Factory PT was a pair of floatplane types that the United States Navy's own aircraft factory built from surplus and spare parts. With funds short at the end of the First World War, the factory assembled 33 aircraft of two kinds, both twin-float biplanes using the fuselage and tail unit of the Curtiss R-6L. The PT-1, of which 15 were built, was fitted with the 62 foot wings of the Curtiss HS-1L, and the PT-2, of which 18 were built, took the 74 foot wings of the Curtiss HS-2L. The PT-2 was powered by a single Liberty piston engine of 330 horsepower. Construction of both types began in 1921, and the factory's own history describes the PT as a torpedo bomber floatplane.