The preliminary investigation report into the Air India Boeing 787 crash did not draw any conclusions or assign any responsibility. However, it provided initial explanations about the cause of the tragedy and raised questions about the actions of the pilots. The document, made public on Saturday, July 12, exactly one month after the crash of the plane that was scheduled to fly from Ahmedabad in the state of Gujarat in western India to Heathrow Airport in London, stated that the engines' fuel supply was cut just before impact.

When it crashed just moments after takeoff in a densely populated area of Ahmedabad, killing 19 people on the ground, the plane was carrying 230 passengers, including 169 Indians, 53 Britons, seven Portuguese and one Canadian, as well as 12 crew members. Only one passenger miraculously survived the crash, which ranks among India's worst air disasters.

The flight lasted only 30 seconds between takeoff and the crash. The Boeing 787-8 Dreamliner reached its maximum recorded speed when the fuel supply switches for both engines moved from the "run" (open) to the "cutoff" (closed) position – first for one engine, then the other, just one second apart. The 15-page report did not specify how the switches could have moved to the cutoff position during flight. Both engines then began to lose power.

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