The report and India’s inspection order referred to an advisory from the Federal Aviation Administration in 2018 that recommended that carriers using Boeing models, including the 787, inspect the locking mechanism of the fuel control switches to ensure they could not be moved accidentally.

Air India has completed precautionary inspections of the fuel control switch locking mechanisms across its Boeing 787 fleet and found no defects, an airline official said on Wednesday. The report revealed that fuel supply to both engines was cut off within one second of each other after takeoff.

The US aviation regulator has said fuel control switches in Boeing aeroplanes are safe, following their reported involvement in a fatal Air India crash that killed 260 people in June. The switches' safety has become a key point of concern after a preliminary report on the disaster was released by investigators on Friday.