Air India and Boeing are in the midst of significant turnarounds, but knowing the cause of the crash of Flight 171 will take a lengthy investigation.

It could take months to fully understand what went wrong in the crash, the first involving a Dreamliner. Officials from India continued the investigation Friday.

The event, which runs from June 16 to June 20, is the industry's largest trade show, where many aircraft orders are typically placed by airlines.

The pilot of the London-bound Air India jet that crashed Thursday put out an urgent call as the Boeing 787-8 quickly lost altitude on takeoff. “Mayday ... no thrust, losing power, unable to lift,” Sumeet Sabharwal told traffic control less than a minute into the flight,

NEW DELHI (Reuters) -Air India and the Indian government are looking at several aspects of the Boeing 787-8 crash in Ahmedabad, including issues with the jet's engine thrust, its flaps, and why its landing gear remained open, a source with direct knowledge told Reuters on Friday.