The single engine Chance Vought F4U Corsair was designed in 1936 for a U.S. Navy single-seater carrier-based fighter. Completion and launch of the F4U-1 was a success, as it was a very amazing aircraft with speed and weaponry, yet the prototype was full of flaws. In the middle of 1943, the F4U-1a variant made its debut. To improve visibility, which was especially important when landing on an aircraft carrier, the canopy was modified to a convex shape, and the pilots chair was raised 17.8 cm. Dive speed problems were solved with a stall strip just outboard of the gun ports on the starboard wing's leading edge. The plane's armament consisted of 6 12.7 mm guns, three in each wing. The F4U-1a was produced in not only the Chance Vought factory, where the aircraft was designed, but also at the Brewster and Goodyear factories (with the designations F3A-1a and FG-1A respectively.) The latter model differed in that it's wings were not folding. The Chance Vought factory produced a total of 2126 F4U-1as.