690 Turbo Commander airplane model. The Turbo Commander developed from the Aero Commander light twins and was based on the 680FLP. The prototype first flew on 31 Dec. 1964. The initial model entered production in 1965 as the 680T. Development continued, and when North American Rockwell took over Aero Commander, the name Hawk Commander was briefly applied to the series. It was dropped in 1971. By this time, Rockwell was already developing the 690, which had first flown on 3 March 1968. The 690 was developed through the Jetprop Commander 840 and 980, which were produced by Gulfstream, who had acquired Rockwell's General Aviation Division in 1981. These were followed by the 1000 model. Production ended in 1985.