Lockheed XP-38A Lightning

Last revised June 13, 1999

A change order to the initial contract provided for the completion of one P-38-LO (Ser No 40-762) equipped with a pressurized cockpit. This airplane was redesignated XP-38A. In order to offset the extra weight of the pressurized cockpit, the 37-mm cannon was to be replaced by a 20-mm unit, but no armament was actually fitted to XP-38A prototype. Manufacturer's trials were performed between May and December of 1942, and the XP-38A was accepted by the USAAF at the end of that year. Much of the information gained on the XP-38A project was later used in the XP-49 design. References:

  1. Lockheed Aircraft Since 1913, Rene J. Francillon, Naval Institute Press, 1987

  2. The P-38J-M Lockheed Lightning, Profile Publications, Le Roy Weber Profile Publications, Ltd, 1965.

  3. War Planes of the Second World War, Fighters, Volume Four, William Green, Doubleday, 1964.

  4. Famous Fighters of the Second World War, William Green, Doubleday, 1967.

  5. The American Fighter, Enzo Anguluci and Peter Bowers, Orion Books, 1987.

  6. Wings of the Weird and Wonderful, Captain Eric Brown, Airlife, 1985.

  7. United States Military Aircraft since 1909, Gordon Swanborough and Peter M. Bowers, Smithsonian Institution Press, 1989.