File:NACA Lockheed 12A 1940.jpeg

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English: 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.
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NASA Langley Research Center - Multimedia Repository

Information for ID # EL-2000-00197

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.

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Author NASA Langley Research Center

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Date/TimeThumbnailDimensionsUserComment
current09:01, 3 February 2013Thumbnail for version as of 09:01, 3 February 20133,000 × 2,388 (1.44 MB)The Bushranger (talk | contribs)cropped caption
10:25, 9 January 2010Thumbnail for version as of 10:25, 9 January 20103,001 × 2,556 (837 KB)Colin Douglas Howell (talk | contribs){{Information |Description={{en|1=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

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