Evasive action has been taken by the pilots of two Qantas aircraft to avoid hitting each other over the Great Australian Bight.
The Civil Aviation Safety Authority (CASA) has confirmed the apparent “near-miss” between two aircraft about lunchtime.
CASA said evasive action was required when the aircraft got too close to each other.
Qantas confirmed two of its aircraft were involved, but denied there was any near-miss.
Airservices Australia, which manages air traffic controllers, said it was aware of the incident but could not make any further comment.
The Australian Transport Safety Bureau (ATSB) has been notified of the incident but says it is waiting for more information before deciding whether to investigate.
The ATSB said planes were meant to stay 1,000-feet apart vertically and five nautical miles apart horizontally and an incident arose when they passed inside of those limits.
It is understood one flight had been heading from Sydney to Perth and the other from Perth to Sydney.
