The preliminary investigation released by India's Aircraft Accident Investigation Bureau (AAIB) on Saturday depicted confusion in the cockpit shortly before the crash of the Boeing Dreamliner

Aviation expert Sanjay Lazar on Sunday said that the preliminary report by the Aircraft Accident Investigation Bureau (AAIB) on the Air India flight 171 crash raises more questions than answers, and expressed that the investigative authority should have made the transcript of cockpit voice recorder (CVR) public.

Preliminary findings into last month’s Air India plane crash suggest the aircraft’s fuel control switches were turned off, causing a loss of engine thrust shortly after takeoff.