From August 1974 to July 1975, Onizuka attended the U.S. Air Force Test Pilot School. In July 1975, he was assigned to the Flight Test Center at Edwards Air Force Base in California. Onizuka became a squadron flight test engineer at the USAF Test Pilot School, and later worked as a manager for engineering support in the training resources division. His duties there consisted of course instruction and management of the airship fleet (A-7, A-37, T-38, F-4, T-33, and NKC-135) being used for the Test Pilot School and Flight Test Center. While at the school, Onizuka registered more than 1,700 flight hours.
From August 1974 to July 1975, Onizuka attended the US Air Force Test Pilot School. In July 1975, he was assigned to the Flight Test Center at Edwards Air Force Base in California. Onizuka became a squadron flight test engineer at the USAF Test Pilot School, and later worked as a manager for engineering support in the training resources division. His duties there consisted of course instruction and management of the airship fleet (A-7, A-37, T-38, F-4, T-33, and NKC-135) being used for the Test Pilot School and Flight Test Center. While at the school, Onizuka registered more than 1,700 flight hours.