Loss of separation involving a Beech Aircraft Corp B200C, VH-AMS and British Aerospace PLC 3107, VH-TQK, Port Macquarie, New South Wales, on 15 March 1993
Breakdown of co-ordination involving a Cessna 421C, VH-CMR and Beech Aircraft Corp C99, VH-OXC, 65 km south of Coffs Harbour, New South Wales, on 10 March 1993