All but one of the T-47As were destroyed in a hangar fire, and the Navy replaced them with upgraded T-39s===Citation S/II===In October, 1983, Cessna announced that they would be improving the aircraft, and the upgraded Model S550 Citation S/II first flew February 14, 1984.
=== Cessna S550 Citation S/II ===В октябре 1983 г., Cessna объявила, что они будут улучшать самолёт, и модернизированная Cessna S550 Citation S/II совершила первый полёт 14 февраля 1984 года.