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P-26A at the NACA facility in 1933. Purpose was to check different flap designs so landing speed could be reduced. NACA came up with a design that Boeing said would not work. An airframe was modified per NACA specs and aircraft subsequently crashed.


Boeing engineering performing XP-936 wing structure loading test in early 1932.


U.S. Army Air Corps P-26A undergoing winter ski conversion.


Boeing Model 241 initial fuselage construction

Tim O'Connor
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Brownstown, IN 47220
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Freeman Field
Seymour, Indiana 47274