Sikorsky Aircraft Corporation, Bridgeport, Connecticut
Specifications from Aero Digest, April, 1935:
• President: Fred W. Neilson. Vice-president in charge of engineering: Igor I. Sikorsky.
Forty-five place high-wing seaplane. A TC 454. Four P. & W. Hornet engines, 575 horsepower each.
Span 114 feet. Length overall 76 feet 8 inches. Height overall 23 feet 10 inches. Wing area 1740 square feet. Power loading 14.8 pounds per horsepower. Wing loading 19.5 pounds per square foot.
Empty weight 21,300 pounds. Useful load 12,700 pounds. Payload 8695 pounds. Gross weight 34,000 pounds. Fuel capacity 1040 gallons. Oil capacity 80 gallons.
Maximum speed 137 miles per hour. Cruising speed 117 miles per hour. Landing speed 65 miles per hour. Service ceiling 11,700 feet. Rate of climb 800 feet per minute. Cruising range 900 miles.
Hull: two-step type, short stern, 7 watertight compartments; metal structure, metal covered; deep keel, closely spaced transverse frames and light stringers; anchor compartment in bow, next aft pilots’ compartment with provision for radio, third compartment contains 4 passenger-seats on port side removable for luggage space, rest room to starboard, fourth compartment accommodates 16 passenger-seats, fifth compartment has 8 passenger-seats, sixth compartment is smoking room with three chairs, stern compartment contains folding bunks for crew. Wing: conventional two-spar construction with compression strut and diagonal wire-bracing; metal construction, fabric covered. Tail group: horizontal surfaces and twin fins and rudders supported by two outriggers. connected to rear spar of wing and braced by two struts to hull sternpost; construction similar to wing. Fafnir bearings for plane and engine controls.
Standard equipment includes Exide battery, Pyle National landing and navigation lights, Pan American Airways radio, Hamilton Standard propellers. Instruments by Pioneer, Kollsman, Lewis, General Electric.
Also see data in September, 1931, AERO DIGEST.