The preliminary investigation report into the 12 July plane crash found no mechanical or maintenance issues with the aircraft or engines and no abnormality with the take-off roll, Air India CEO Campbell Wilson said in an internal note to employees.

The memo, seen by Reuters, comes after a preliminary report on Saturday showed confusion in the cockpit shortly before the Air India jetliner crashed and killed 260 people last month, after the plane's engine fuel cutoff switches flipped almost simultaneously and starved the engines of fuel.