The crash of a Boeing 787 passenger jet in India minutes after takeoff on Thursday is putting the spotlight back on a beleaguered manufacturer though it was not immediately clear why the plane crashed.

The Air India 787 went down in the northwestern city of Ahmedabad with more than 240 people aboard shortly after takeoff, authorities said. It was the first fatal crash since the plane, also known as the Dreamliner, went into service in 2009, according to the Aviation Safety Network database. Boeing shares fell more than 5 percent in pre-market trading.

The 787 was the first airliner to make extensive use of lithium ion batteries, which are lighter, recharge faster and can hold more energy than other types of batteries. In 2013 the 787 fleet was temporarily grounded because of overheating of its lithium-ion batteries, which in some cases sparked fires.

737 Max

The Max version of Boeing’s best-selling 737 airplane has been the source of persistent troubles for Boeing after two of the jets crashed. The crashes, one in Indonesia in 2018 and another in Ethiopia in 2019, killed 346.