Photo of a preserved Grumman FF-1 fighter. Original caption: "First flown in 1931, the Grumman FF-1 (affectionately known as "Fifi )" was noteworthy for its innovative design characteristics that marked a great step forward in aircraft design - first fighter with retractable landing gear; an enclosed canopy for both cockpits; and, an all metal, stressed skin fuselage."
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U.S. Navy photo on the U.S. Centennial of Flight website [1]
{{Information |Description=Photo of a preserved Grumman FF-1 fighter.</br> Original caption: "First flown in 1931, the Grumman FF-1 (affectionately known as "Fifi )" was noteworthy for its innovative design characteristics that marked a great step forward
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