Sikorsky XPBS-1 patrol bomber prototype
The Navy Sikorsky XPBS-1 patrol bomber prototype (BuNo 9995) while being evaluated by the National Advisory Committee for Aeronautics, 25 July 1938.
Size: 3039px × 2112px
Photo credit: © NASA Archive / Alamy / Afripics
License: Licensed
Model Released: No
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