A report released by India's Aircraft Accident Investigation Bureau pointed to fuel switches that flipped off during takeoff, depriving engines of power.

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 safety of the switches has become a key point of concern after a preliminary report on the disaster was released by investigators on Friday.

The US Federal Aviation Administration has issued a notice to its international counterparts that fuel control switches in Boeing aeroplanes like the Dreamliner involved in last month’s fatal Air India crash do not pose a safety issue.