No answers yet on Qantas plane plunge

Investigators are still looking for an answer to why a Qantas jet fell more than 300 feet mid-flight last year.

The Australian Transport Safety Bureau on Wednesday said it had considered many factors as to why Qantas flight 72 took the sudden dive over Western Australia on October 7, 2008.

Investigators are now considering the possibility that cosmic rays interfered with an onboard computer.

The investigation is continuing and another report from the safety bureau is due next year.