The Aircraft Accident Investigation Bureau (AAIB) has also rejected the international report, saying it is too early to draw any definite conclusions.

The deadly Air India crash last month has renewed a decades-old debate in the aviation industry over installing video cameras monitoring airline pilot actions to complement the cockpit voice and flight data recorders already used by accident investigators.

Air India's inspection of the locking feature on the fuel control switches of its existing Boeing 787 aircraft found no issues, an internal communication circulated within the airline said.

International airlines from South Korea and India are preparing to inspect its Boeing fleets following findings from the Air India crash investigation.