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India discovers engine switch movement during fatal Air India crash; Boeing and GE do not take immediate action

The preliminary report on the Air India crash, which killed 260 people, revealed that three seconds after takeoff, the aircraft's fuel cutoff switches switched from run to off almost simultaneously, depriving the engine of fuel.

According to the report published on Saturday by Indian aviation investigators, the Boeing 787 Dreamliner immediately started to lose thrust and sank down.

On the cockpit voice recording, one pilot is heard asking the other pilot why he stopped the fuel. The report stated that "the other pilot replied that he had not done so."

The crash report did not specify which flight captain made the remarks and which first officer. Nor did it identify which pilot sent out "Mayday Mayday Mayday" before the crash.

The preliminary report does not mention how the switch on the flight to London from Ahmedabad, India, could have been flipped.

John Cox, an aviation safety expert from the United States, said that a pilot could not accidentally move fuel switches feeding the engines. He said that a pilot would not be able to accidentally move the fuel switches that feed engines.

The engines are cut off almost instantly by pressing the switch. Most often, it is used to shut down the engines once an aircraft has reached its gate at the airport or in emergency situations such as a fire. The report did not mention any emergency that would have required an engine cutoff.

India's Aircraft Accident Investigation Bureau stated that "at this stage of the investigation, there are currently no recommended actions for Boeing 787-8 engine operators or manufacturers and/or GE GEnx-1B engines"

Air India, Boeing, and GE Aviation didn't immediately respond to requests for comments.

The investigation is being led by the agency under the Indian civil aviation ministry. Reporting by Hritam Mukerjee in Bengaluru and Gursimran Khur in New Delhi. Additional reporting by Allison Lampert and David Shepardson, in Washington, and Rajesh Kumar Singh, in Chicago. Writing and editing by Jamie Freed.

(source: Reuters)