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 preliminary report into the crash referred to a 2018 FAA advisory, which recommended that operators of several Boeing models inspect the locking feature of the fuel-cutoff switches. The report said Air India did not carry out the inspections.