The Chance Vought F4U Corsair was an American fighter aircraft that saw service in World War II and the Korean War (and in isolated local conflicts). Goodyear-built Corsairs were designated FG and Brewster-built aircraft F3A. The Corsair served in some air forces until the 1960s, following the longest production run of any piston-engined fighter in history (1940 - 1953). During World War II, it was the fighter the Japanese feared the most. The US Navy counted the average kill-rate as for every F4U shot down, 11 enemy aircraft were shot down. It had a turbocharged engine, which made a whistling sound when it was in the air. The Japanese nicknamed it "Whistling Death".