While the Air India Boeing 787-8 crash inquiry has found that fuel control cut-off switches were activated almost as soon as the aircraft lifted off, the circumstances of the switches' movement remain unexplained.

A preliminary report into the Air India 787 crash that killed 260 reveals both engine fuel switches were off shortly after takeoff from Ahmedabad.

The two engines on the Air India flight shut down within one second of each other before the Boeing 787 Dreamliner crashed last month in Ahmedabad, India, killing at least 260 people, according to a preliminary report released Friday.