F-84G ThunderjetRepublic F 84 Thunderjet airplane model. The Republic F 84 Thunderjet, the USAF's first post war fighter, made its initial flight on February 26, 1946. It began rolling off the production lines in June 1947, and by the time production ceased in 1953, approximately 4,450 "straight wing" F 84s (in contrast to the swept wing F 84F) had been built. In addition to being used by the USAF, many were supplied to allied nations participating in the Mutual