The preliminary finding gives investigators a new line of inquiry as they study a crash that killed all but one of the plane’s passengers.

India's aviation safety watchdog said on Tuesday surveillance conducted on Air India's Boeing 787 fleet did not reveal any major safety concerns, days after one of its jets crashed, killing at least 271 people.

The aviation watchdog’s review included an analysis of recent operational data, with a focus on Air India’s wide-body operations, particularly the Boeing 787 aircraft. DGCA last week ordered enhanced