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.
Tim O'Connor
(502) 235-3801
Mailing address:
2375 East State Road 250
Brownstown, IN 47220
501320
Airport Address 1019 Ave A
Freeman Field
Seymour, Indiana 47274