Lockheed Model 10 Electra
Technical Information

Background
The Electra was Lockheed's first all-metal and twin-engine design by Hall Hibbard. Named Electra for the star in the Pleiades constellation. A model of the design was tested at the University of Michigan in a wind tunnel with much of the testing by student assistant Kelly Johnson who suggested the plane's single tail be changed to a double tail and that large wing fillets be removed. Both changes were adopted and after completing his master's degree, Johnson hired by Lockheed as an engineer.

On February 23, 1934 the prototype made its first flight piloted by Marshall Headle. The Electra was designed to compete with the Douglas DC-2 and Boeing 247. In total 149 were built including four commercial versions, Model 10A, Model 10B, Model 10C and Model 10E and five military versions: XR2O-1, XR3O-1, XC-35, Y1C-36 and Y1C-37.

On July 2, 1937, aviatrix Amelia Earhart disappeared in a highly-modified Model 10E Electra 1055 registration NR16020 during her attempt to fly around the world. Prior to the war, Guinea Airways in New Guinea and in Australia with MacRobertson Miller Airlines (MMA) operated Electras in New Guinea.

During World War II, the Model 10 Electra was designated C-36 Electra. The Model 12 Electra Junior was designated the C-40. During January 1943 they were redesignated as the UC-36B and UC-40 respectively.

Production
Lockheed built a total of 149 Electras
The Electra was produced in several variants, for both civilian and military customers.

Technical Details (Model 10A)
Crew  Two
Engine  2 x Pratt & Whitney R-985-13, 450 hp with two bladed propellers
Span  55'
Length  38' 7"
Height  10' 1"
Maximum Speed  202 mph
Range  810 miles
Capacity  10 passengers