New Delhi, July 14 -- A couple of days after India's Aircraft Accident Investigation Bureau released its preliminary report on last month's Air India flight crash, the airline's chief executive told employees to avoid drawing premature conclusions as the investigation was far from over.

In an internal note accessed by Mint, CEO Campbell Wilson highlighted that AAIB's report had not found any issues with the engines or the Boeing 787 aircraft.

"The Preliminary Report found no mechanical or maintenance issues with the aircraft or engines, and that all mandatory maintenance tasks had been completed. There was no issue with the quality of fuel and no abnormality with the take-off roll," Wilson said in the note.

He added that the pilots had...