From Fred Niven's Ansett history :
On 17 April 1991, Ansett N.T. ceased operations, after F28 VH-FKF operated the last Ansett W.A. F28 Darwin-Katherine-Tennant Creek-Alice Springs service.
Most services were taken over by Ansett./Ansett W.A., with the Alice Springs-Darwin ‘milk run’ being taken over by Skyport.
FKF had Ansett N.T. titles.
Skyport used C441 LEM and XMJ.