A preliminary report into the crash released by India’s Aircraft Accident Investigation Bureau (AAIB) on Saturday said one pilot was then heard on the cockpit voice recorder asking the other why he cut off the fuel and “the other pilot responded that he did not do so”.

An official report on the world’s deadliest aviation accident in a decade, seen by CNN, has answered one key question – but raised others.

A black-box recording of dialogue between the Air India flight's two pilots indicates it was the captain who turned off switches that controlled fuel flowing to the plane's two engines, the Wall Street Journal reported on Wednesday,