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 people dead.

Investigators recovered the cockpit voice recorder (CVR) - the second black box - from the wreckage, along with a trailing wire from the aircraft’s rear section.

Air India plane crash investigators have found both of the Boeing 787's "black boxes," hopefully brining an understanding of the cause of the disaster a step closer.