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.

Investigators in India are studying the black boxes of a Boeing 787 Dreamliner after recovering them from the aircraft wreckage to ascertain the cause of last week’s plane crash that left at least 270

Air India flight AI171, a Boeing 787-8 carrying 242 people, crashed after taking off from Ahmedabad on its way to London.

India’s aviation safety regulator has said it has found no “major safety concerns” during inspections of Air India’s Boeing 787 aircraft following Thursday’s fatal crash of a flight from Ahmedabad to London.

Aviation watchdog DGCA on Tuesday said surveillance of Air India’s Boeing 787 fleet did not reveal any major safety concerns in the wake of the fatal plane crash in Ahmedabad last week

An Air India Boeing 787-8 flight headed for New Delhi returned to Hong Kong shortly after takeoff Monday because of a "technical issue," Indian media reported.

The black boxes will provide cockpit conversations and data related to the plane’s engine and control settings to investigators and help them in determining the cause of the crash.