06/30/2011. Developed from the V-141 with modifications to the tail unit, the V-143 was entered in an Argentine fighter contest. As the spinning characteristics of the fighter were still unsatisfactory, the prototype was fitted with an anti-spin chute before demonstration, a fact of which a competing manufacturer made capital.

In May 1937, in an attempt to improve the marketing prospects of the V-143, a number of engineering changes were introduced. The rear fuselage was lengthened considerably and an SB2U-1-style tail assembly was fitted in an attempt to eradicate the handling shortcomings of the fighter. At the same time, a Pratt & Whitney R-1535-SB4G engine of 825 hp was installed.

The USAAC evaluated the modified prototype on 18 June 1937, but again rejected the aircraft. As no export orders for the fighter - which was also offered with a 525hp Wasp Junior engine as the Model V-150 - materialized, the sole V-143 prototype was sold to the Japanese Imperial Navy, which assigned it the designation AXV1.

Although it was later to be widely alleged that the Mitsubishi A6M Zero-Sen was based on the V-143, there was no truth in such allegations, although Vought's method of undercarriage retraction provided the inspiration for that of the Japanese fighter.