All Aero

In January 1927 the Chance Vought company produced a single seat fighter version of its mass produced VO 1 shipboard observation aircraft. A two bay biplane, the VO 1 was not entirely suitable as the basis for a competitive fighter, and with only the same engine as before, the 200 hp Wright R 1790 Whirlwind, performance was inadequate. Nevertheless, 20 FU 1 fighters were built for the US Navy.