Airframe event involving Boeing 747-238B, VH-EBQ, 230 km north of Cairns, Queensland, on 27 December 1990
Collision with terrain involving Cessna 172L, VH-SUK, Mittagong, New South Wales, on 23 December 1990
Collision with terrain involving Cessna 210N, near Oakdale, New South Wales, on 22 December 1990
Collision with terrain involving Cessna C152, VH-BUO, 3 km east of Kerswell Point, Lake Burragorang, New South Wales, on 21 December 1990
Engine malfunction involving Hiller UH12-E, VH-FBQ, 10 km north-west of Quirindi, New South Wales, on 19 December 1990