Stearman Aircraft Company, Wichita, Kansas
Specifications from Aero Digest, April, 1935:
• President and General Manager: J. E. Schaeffer. Vice-president and Chief Engineer: Mac Short. Secretary-Treasurer: Clif Barron.
Two-place open biplane. ATC 504. P. & W. Wasp Junior engine, 420 horsepower.
Span 35 feet. Length overall 25 feet 1 inch. Height overall 9 feet 4 inches. Wing area 275 square feet. Chord upper wing 62 inches. Chord lower wing 48 inches. Power loading 9.52 pounds per horsepower. Wing loading 14.53 pounds per square foot.
Empty weight 2385 pounds. Useful load 1615 pounds. Payload 230 pounds. Gross weight 4000 pounds. Fuel capacity 155 gallons. Oil capacity 10 gallons.
Maximum speed 170 miles per hour. Cruising speed at 87% power 140 miles per hour. Landing speed 60 miles per hour. Service ceiling 17,000 feet. Rate of climb 1100 feet per minute. Cruising range 1033 miles.
Fuselage: fabric covered chrome molybdenum welded steel tubing; fairing with plywood and spruce stringers; detachable engine mount; forward portion, as well as mail pit, metal cow led ; tandem cockpits, dual controls. Wings: wood beams and ribs; metal compression members; steel fitting and steel interplane struts; single bay truss; wing cell of four panels and center section; ailerons on upper panels only. Tail group: steel tube structure, fabric covered; fixed stabilizer; balanced elevators with trimming tabs at trailing edges; fixed fin with balanced rudder and fixed trim tab. wire braced split axle landing gear with General tires, Bendix wheels and brakes, spring oleo shock absorbers. Plane controls equipped with Fafnir ball bearings; engine controls plain and ball bearing.
Standard equipment includes Hamilton Standard controllable-pitch metal propeller, Exide battery, landing lights, illuminated instrument board.
Flight, engine and blind flying instruments are provided in both the front and rear cockpits, including tachometers, altimeters, air speed indicators.