Image: NACA Lockheed 12A 1940

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Description: The Lockheed 12A Electra Junior executive transport, as delivered from the factory, only had fins mounted at the tips of the horizontal tail. Langley added a center fin to improve the directional stability of its Lockheed 12A in June 1940. This Electra Junior was also equipped with wing de-icing using engine exhaust. The latter modification resulted in "NACA 97" becoming one of the first aircraft assigned to the newly-opened Ames Aeronautical Laboratory in California. The center fin was removed at the time the aircraft was sold in order to comply with the approved type certificate for the aircraft.
Title: NACA Lockheed 12A 1940
Credit: This image or video was catalogued by Langley Research Center of the United States National Aeronautics and Space Administration (NASA) under Photo ID: EL-2000-00197 and Alternate ID: L20252.
Author: NASA Langley Research Center
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

Image usage

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William H. McAvoy

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