Challenge Rotorcraft, West Wubin, Western Australia, on 7 July 1990
Cessna 172-H, VH-DPC, Deloraine, Tasmania, on 7 July 1990
Collision with terrain involving Piper PA 23, VH-ERT, Wollongong, New South Wales, on 7 July 1990
Robinson R22-Beta, VH-IOT, Charters Towers, Queensland, on 5 July 1990
Cessna 172-D, VH-RKY, Longreach Training Area, Queensland, on 3 July 1990
Piper PA-60-600, VH-AVS, Orange, New South Wales, on 3 July 1990
Schleicher KA-6, VH-GEA, Marulan, New South Wales, on 30 June 1990
Pegasus Quantum, Emkaytee (50 km south-east of Darwin), Northern Territory, on 30 June 1990
Piper PA-28R, VH-SWB, SW Vernon Island (40 km north-north-east of Darwin), Northern Territory, on 29 June 1990
Bellanca 8-KCAB, VH-SAR, Moorabbin Airport, Victoria, on 26 June 1990
Cessna 310R, VH-XGN, Rockwood Station (107 km south of Hughenden), Queensland, on 25 June 1990
Wirestrike involving a Cessna 172RG, VH-JFK, Cooyar, Queensland, on 24 June 1990