Investigators in India recovered the flight data recorder from the wreckage of the Air India Express aircraft, which crashed over the weekend. The plane, a Boeing 737, overshot the runway at Mangalore airport on Saturday and plunged into a valley, killing 158 people, including the crew. There are eight survivors. A team from the United States National Transportation Safety Board will arrive at the crash site today to help with the investigation. The BBC’s Sanjoy Majumder reports from Delhi.