Smoke involving a de Havilland Canada DHC-8-315, VH-JSQ, 172 km south of Moomba Aerodrome, South Australia, on 5 May 1998
ACAS warning involving a Cessna P206, VH-SIR and Airbus A320-211, VH-HYA, 74 km south-east of Perth Aerodrome, Western Australia, on 3 May 1998
Air-ground-air involving a Beech Aircraft Corp 76, VH-AZX and British Aerospace PLC BAe 146-200, VH-NJU, Mackay Aerodrome, Queensland, on 28 April 1998
Fuel - Other involving a Piper PA-31-350, VH-SVN, Norfolk Island Aerodrome, on 28 April 1998
Loss of separation involving a Piper PA-23-250, VH-JSB and Piper PA-31-350, VH-OZV and Piper PA-31-350, VH-IAM, 12 km south-east of Launceston VOR, Tasmania, on 21 April 1998
Forced/precautionary landing involving a Hiller Aviation UH-12E, VH-LUN, 10 km north-west of Dorrigo, New South Wales, on 21 April 1998
Forced/precautionary landing involving a Piper PA-28-181, VH-NOR, 2 km north-west of Mittagong (ALA), New South Wales, on 18 April 1998
Partial power loss involving a Gippsland Aeronautics Pty Ltd GA-200, VH-SAV, 20 km south-east of Mount Gambier Aerodrome, South Australia, on 17 April 1998