Alaska Airlines has said it is grounding its fleet of Boeing 737 Max 9 aircraft after a window and piece of fuselage blew out midair, forcing an emergency landing in Portland, in the US state of Oregon.
The incident took place shortly after takeoff on Friday and the gaping hole caused the cabin to depressurise. Flight data showed the plane climbed to 16,000 feet (4,876 metres) before returning to Portland International Airport.