Investigators in India on Sunday recovered the second black box from the London-bound Air India Boeing 787 that crashed in the city of Ahmedabad, killing at least 279 people, authorities announced. The cockpit voice recorder has been found,

An Air India flight returned to Hong Kong on Monday shortly after takeoff due to a midair technical issue, days after another of the airline’s flights crashed and killed at least 270 people.

Bob Blackman, MP for Harrow East, said it was believed to be the highest number of British deaths ever recorded in a plane crash, with 53 UK nationals on board.