Near miss warning
Safety officials say a near collision of airliners in San Francisco in July last year was a few metres from becoming the worst crash in aviation history and underscores the need for faster reporting of dangerous incidents before evidence is lost.
The National Transportation Safety Board issued a report on Thursday on the incident in which an Air Canada plane nearly crashed into planes lined up on the ground at San Francisco International Airport.
The pilots were slow to report the incident. By the time they did, the plane had made another flight and the cockpit voice recording was recorded over.
The report says the recording could have helped investigators understand why the pilots missed the runway and were about to land on a taxiway where four other planes were idling before they aborted their landing.