A preliminary report released last week included detail about the fuel, saying that the fuel to the plane's engines appeared to have been shut off.

The deadly Air India crash last month has renewed a decades-old debate in the aviation industry over installing video cameras monitoring airline pilot actions to complement the cockpit voice and flight data recorders already used by accident investigators.

Black box recordings reveal Sumeet Sabharwal remained composed as his first officer, Clive Kunder, appeared to panic when the supply to both engines was suddenly cut.