Investigators probing a deadly Air India crash said in a preliminary report that the aircraft's engine fuel switches were flipped to an off position briefly, leading to confusion in the cockpit and putting focus on the pilots flying the Boeing 787.

A preliminary finding into last month’s Air India plane crash has suggested the aircraft’s fuel control switches were turned off, causing a loss of engine thrust shortly after takeoff.

Boeing investors finally have details from a preliminary accident report for Air India flight 171, which crashed on June 12 less than a minute after taking off from an airport in Ahmedabad, India.