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.

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.

Investing.com-- Fresh details from the probe into a deadly Air India crash in June, involving a Boeing Co (NYSE: BA) 787 Dreamliner, are shifting focus to the senior pilot in the plane, the Wall Street Journal reported on Wednesday.