Sikorsky Aircraft Corporation, Bridgeport, Conn.
Specifications from Aero Digest, April, 1935:
• Seventeen-place high-wing amphibion. Two P. & W. Hornet S1E-G engines, 750 horsepower each.
Span 84 feet. Length overall 50 feet 5 inches. Height overall 17 feet 9 inches. Wing area 775 square feet. Chord 11 feet 6 inches. Power loading 11.7 pounds per horsepower. Wing loading 22.63 pounds per square foot.
Empty weight 9821 pounds. Useful load 7720 pounds. Payload 4000 pounds. Gross weight 17,541 pounds. Fuel capacity 400 gallons. Oil capacity 24 gallons.
Maximum speed at sea level 186 miles per hour. Cruising. speed at sea level 167 miles per hour. Landing speed 65 miles per hour. Service ceiling 23,000 feet. Rate of climb 1275 feet per minute. Cruising range 750 miles.
Hull: two-step type, short stern with five watertight compartments; metal structure, metal covered; shallow keel, widely spaced transverse frames and bulkheads, and heavy stringers; contains anchor compartment in bow, pilot’s compartment next aft with provision for radio, then baggage, steward’s and toilet compartment, next a passenger compartment for ten passengers, aft of which is another passenger compartment for five passengers and the entrance and exit, through a hatch. Wing: monospar, single box type construction, metal; leading edge removable for inspection; center section is supported on tower and strut braced to hull and houses engines, tanks, controls, etc.; metal and fabric covering, flush riveting all over. Tail group: metal structure, fabric covered; adjustable stabilizer, dynamically balanced elevator; single rudder balanced by automatic trailing edge flap. Fully retractable landing gear equipped with Goodrich or General 45 inch streamline tire, Autofan wheels and brakes, Sikorsky shock absorbers. Fafnir and Norma-Hoffmann bearings on all controls.
Standard equipment includes Exide battery, Pyle National landing and navigation lights; Hamilton Standard controllable-pitch or constant speed propellers.
Instruments by Kollsman, Pioneer, Lewis, General Electric, Sperry, Eclipse.