On 1 May 2008 at about 2216 Eastern Standard Time, an Airbus
Industrie A320 aircraft, registered VH-VQS, was conducting the
runway 32L (left) instrument landing system missed approach
procedure at Launceston Aerodrome, Tasmania. During the climb, the
A320 came into close proximity with a Boeing Company 737 that was
manoeuvring at 3,100 ft above mean sea level about 5 NM (9 km) to
the north-west of the aerodrome. The lateral separation between the
aircraft reduced to within 3 NM (5 km) and zero vertical separation
as the A320 climbed through 3,100 ft. No Traffic Alert and
Collision Avoidance System alerts were generated during the
Both aircraft were operating scheduled passenger services from
Melbourne, Victoria and had arrived at Launceston outside the
normal operating hours of the Launceston air traffic control tower.
Separation between the aircraft was therefore the responsibility of
the respective flight crews. In this instance, a breakdown in the
communication and interpretation of the respective flight crews'
separation planning contributed to the proximity event.