New Delhi, July 12 -- Mark D Martin, Founder and CEO of an aviation safety and consulting firm, on Saturday said that the preliminary report by the Aircraft Accident Investigation Bureau (AAIB) on the Air India flight 171 crash was "cryptic" in many ways.

He argued that the Ram Air Turbine (RAT) in the aircraft was only deployed in the event of engine failure.

"It is the initial report, and it is quite cryptic in many ways. It says a lot of points that don't add up. If there were an engine failure, that is only when the RAT deploys. When the RAT deploys, there is only one course to restart the engine," Martin told ANI.

He said that incidents of fuel switches tripping to the "cutoff" position have been reported in the past. However, the...