Waco Aircraft Company, Troy, Ohio
Specifications from Aero Digest, April, 1935:
• Three-place open biplane. (Models UMF and YMF respectively; data on YMF indicated in brackets.) Continental engine 210 horsepower. (Jacobs engine 225 horsepower.) ATC 546 (542).
Span 30 feet. Length overall 23 feet 3.62 inches. Height overall 8 feet 5.37 inches. Wing area 233.5 square feet. Power loading 11.9 (11.1) pounds per horsepower. Wing loading 10.7 pounds per square foot.
Empty weight 1485 (1540) pounds. Useful load 1015 (960 pounds). Payload 515 (460) pounds. Gross weight 2500 pounds. Fuel capacity 50 gallons. Oil capacity 4 gallons. Maximum speed 143 (147) miles per hour. Cruising speed 128 (129) miles per hour. Landing speed 47 miles per hour. Service ceiling 14,500 (16,000) feet. Rate of climb 1100 (1250) feet per minute. Cruising range 450 miles.
Fuselage: fabric covered; chrome molybdenum welded steel tubing; tandem seating arrangement, with two seats side-by-side in front; dual controls; baggage compartment. Wings: fabric covered; spars spruce; ribs spruce and plywood; center section carried above fuselage on splayed out N -struts, with N -strut interplane bracing; ailerons on all wings. Tail group: fabric covered; chrome molybdenum welded steel tubing; adjustable stabilizer. Fixed divided-type landing gear equipped with 7.50 X 10 tires, Autofan wheels and brakes, oleo shock absorbers; consists of two oleo compression members attached at their upper ends to two short strut-braced horizontal tubes, one on either side of the fuselage, and hinged at their bottom ends to the center line of the underside of the fuselage; equipped with tail wheel.
Standard equipment includes electric starter, Hartzell wood propeller, navigation lights, fire extinguisher, and NACA engine cowling.
Instruments: tachometer, altimeter, compass, air speed indicator, oil pressure gauge, oil temperature gauge.