Excerpt from the Hobart Mercury
........ATSB director of aviation safety investigation Julian Walsh confirmed the investigation of last week's occurrence involving Jetstar and Virgin Blue aircraft.
Mr Walsh said the planes did not pass each other in opposite directions and the pilots had been communicating with each other.
"Jetstar made a missed approach and as it climbed away the aircraft were on a converging path but preliminary investigations indicate they were not closer than five miles," he said.
Mr Walsh said the Traffic Alert and Collision Avoidance System had not been triggered.
He said both aircraft were in contact with the Melbourne control tower because the Launceston tower had closed.
Radar data would show the flight paths of the aircraft, speed and altitude information.
"That will give us a replay of what the two aircraft were doing and the audio data from the aeroplanes will tell us what they knew of each other," he said.
Virgin Blue spokeswoman Amanda Bolger said: "Virgin Blue has made its own internal inquiries and the ATSB will follow its processes but from our investigations we're satisfied that at no stage were the aircraft less than five miles apart."
Jetstar spokesman Simon Westaway said the airline had provided an incident report to the ATSB.
Mr Westaway said a "go-around" had been undertaken by pilots.