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.
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The American Fighter, Enzo Anguluci and Peter Bowers, Orion Books,
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United States Military Aircraft since 1909, Gordon Swanborough and
Peter M. Bowers, Smithsonian Institution Press, 1989.