The 1939 Spartan NS-1 NX17634 was built for USN trainer evaluation (as 3645). First flying on 23 September 1939, piloted by Jess Green, the design became the NP-1.
Engine: 220hp Lycoming R-680-B4C
Wingspan: 33’9″
Length: 24’3″
Useful load: 719 lb
Mac speed: 126 mph
Cruise: 103 mph
Stall: 48 mph
Range: 440 mi
Seats: 2
All Aero 