One of the first designs of the Lockheed company, the Electra was one of the first all-metal, passenger planes; its many innovations contributed to the design of the P-38 fighter.
From Aero Digest, April, 1935:
Lockheed Aircraft Corporation, Burbank, California
• Twelve-place low-wing monoplane. (Models 10A and 10C respectively; data on 10C in brackets). ATC 551 (559). P. & W. Wasp Junior SB engine, 400 horsepower; (P. & W. Wasp SC1 engine, 450 horsepower). Span 55 feet. Length overall 38 feet 7 inches. Height overall 10 feet 1 inch. Wing area 458.3 square feet. Power loading 12.19 (11.44) pounds per horsepower.
Weight empty 6205 (6710) pounds. Useful load 3545 (3590) pounds. Payload 2200 pounds. Gross weight 9750 (10,300) pounds. Fuel capacity 200 (260) gallons. Oil capacity 14 (17) gallons.
Maximum speed 210 (205) miles per hour. Cruising speed 195 (192) miles per hour. Landing speed 63 (65) miles per hour. Service ceiling 21,650 (22,750) feet. Rate of climb 1140 (1050) feet per minute. Cruising range 850 (875) miles.
Fuselage: monocoque construction, all metal with transverse and longitudinal stringers of channel section. Wing: stressed skin, all-metal; flaps all-metal stressed skin.
Tail group: all-metal stressed skin; stabilizer and elevators bolted to fuselage with cantilever vertical fin at each end. Retractable landing gear equipped with Goodyear 35 X 15.6 tires, Goodyear wheels and brakes, Aerol shock absorbers. Engine and plane controls Fafnir, Norma-Hoffmann and SKF ball bearings.
Standard equipment includes landing and navigation lights, Western Electric radio, Lux and Pyrene fire extinguishers, sound insulation, ventilation system, bonding and shielding, Exide battery, Hamilton Standard controllable-pitch propellers.
Instruments: Sperry gyro-horizon, directional gyro. Pioneer compass, altimeter, airspeed indicator, turn and bank, rate of climb, manifold pressure gauge, clock. Kollsman sensitive altimeter, triple engine gauges, fuel gauges. Weston tachometers, engine temperature indicator, air temperature indicator, cabin temperature indicator, volt-ammeter. Landing gear and flap position indicators. Also see data in April, 1934, AERO DIGEST.
Lockheed Electra, NC 16056
National Airways hangar
1936
Boston & Maine - Central Vermont Airways
Amelia Earhart was flying a Lockheed Electra when she disappeared over the Pacific in 1937.