Both 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.

A preliminary report into the Air India crash that killed 260 people last month showed three seconds after taking off, the plane's engines fuel cutoff switches almost simultaneously flipped from run to cutoff,

The London-bound plane had barely left the runway at Ahmedabad airport before it careened back to earth. Everyone on board was killed, except for one passenger.