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On March 28, 1931, the US Navy placed its first contract with the Grumman Aircraft Engineering Corporation, beginning an association with the manufacturer which continues to this day. The contract was for the prototype of the FF-1 (G-5), a two-seat biplane fighter which was the US Navy's first airplane with retractable landing gear. The prototype first flew on December 29, 1931, and deliveries of production airplanes began on April 24, 1933.
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