|National origin||United States|
|First flight||23 January 1934|
|Primary user||United States Navy|
The Berliner-Joyce XF3J was an American biplane fighter, built by Berliner-Joyce Aircraft. It was submitted to the United States Navy for their request for a single-seat carrier-based fighter powered by a 625 hp (466 kW) Wright R-1510-26 engine.
The XF3J had elliptical fabric covered wings which gave it the appearance of a butterfly. The fuselage was semimonocoque metallic with an aluminum skin. The undercarriage was fixed, and would be the last biplane fighter without a retractable gear that the U.S. Navy would test. The aircraft performed satisfactorily in testing, but more promising aircraft had been developed and, in September 1935, the program was terminated.
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