11/30/2008. Remarks by Johan Visschedijk: "One of six NA-68s produced for the Royal Thai AF in November 1940, designated NA-50A, this and the other five aircraft were requisitioned by the US government shortly before delivery. Redesignated P-64 they received the s/n 41-19082 to 41-19087, and the pictured aircraft (41-19085) was delivered to the USAAC on April 16, 1941 and used for advanced fighter training, although the weapons had been removed.
In 1943 the original 870 hp Wright R1820-77 Cyclone radial engine was replaced by an 1,300 hp R1820-66. After the war 41-19085 was bought by Jack Canary of Phoenix, Arizona and registered NX37498.