Wirestrike involving Robinson R22-Beta, VH-JXV, Nithsdale Station, 90 km south-west of McKinlay, Queensland, on 28 April 1991
Loss of control involving Skycraft Scout, 10 km north of Nyabing, Western Australia, on 28 April 1991
Loss of control involving an Agusta A109A II, VH-JVH, Sydney Airport, New South Wales, on 25 April 1991
Airborne collision involving Piper PA28-151, VH-JGG and Piper PA28-181, VH-DAF, Mudgee, New South Wales, on 12 April 1991
Collision with terrain involving Piper PA-30, VH-MCO, Fitzroy Falls, New South Wales, on 10 March 1991
Collision with terrain involving Bell 206L-1, VH-TCH, South Stradbroke Island, Queensland, on 3 March 1991
Collision with terrain involving Bell 47-G5A, VH-NAG, 10 km south of Lawn Hill (240 km north-north-west of Mount Isa), Queensland, on 2 March 1991
Breakdown of co-ordination involving Boeing 737-377, VH-CZG and Boeing 737-376, VH-TJD, Mount Isa, Queensland, on 1 March 1991