The head of the Australian airline, Qantas, says he stands by its maintenance record, after another two mid-air equipment failures.

A Qantas flight from Los Angeles to Sydney was forced to fly side by side with an Air New Zealand plane, after its weather radar failed.

And a Sydney bound flight had to make an emergency landing in Melbourne on Oct. 29 because of problems with its landing gear indicators.

Qantas CEO, Geoff Dixon, believes it's not the airline's fault.

"And those two major incidents look like they were more to do with the manufacture of the aircraft or parts of the aircraft than anything to do with Qantas' maintenance," he said.

"I don't think that that's a well known fact and as you know once something gets out there it's always hard to take it back."

This month in Western Australia scores of passengers were injured when a Qantas Airbus suddenly lost altitude.