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.

A preliminary investigation released last week by India's Aircraft Accident Investigation Bureau found confusion in the cockpit shortly before the June 12 crash, and raised fresh questions over the position of the critical engine fuel cutoff switches.

New information leaked from the Air India disaster investigation suggests the captain switched off the engine fuel flow. Officials have been probing the black boxes of the Boeing 787 Dreamliner recovered from the crash site in Ahmedabad.