Lockheed Model 10 Electra

The Lockheed Model 10 Electra is an American twin-engined, all-metal monoplane airliner developed by the Lockheed Aircraft Corporation and produced mainly in the 1930s to compete with the Boeing 247 and the Douglas DC-2. It was Lockheed's first all-metal and first twin-engined design, by Lloyd Stearman and Hall Hibbard, and the prototype first flew on 23 February 1934. Wind-tunnel work at the University of Michigan by the student assistant Kelly Johnson led to the twin tails that became a Lockheed trademark. Lockheed built 149 Electras in several variants. The type is best known for the modified Model 10E in which Amelia Earhart and Fred Noonan disappeared over the central Pacific in July 1937, and many Electras were pressed into military service in the Second World War, for instance as the USAAF C-36.