What happened
While descending for an approach into the airport, the aircraft encountered moderate turbulence. In anticipation of the turbulent conditions, the captain briefed the lead flight attendant and requested that the cabin be secured early. The crew established a procedure where a prearranged chime signal would notify the lead flight attendant once all passengers and crew members were seated and restrained.
Following the chime signal, all occupants were secured. However, a flight attendant seated in the rear of the plane observed that an upper door compartment in the galley had come open. Concerned that objects might fall from the compartment and cause injury to herself or another attendant during landing, the crew member unfastened her restraints and stood up to secure the door. While she was returning to her seat, the aircraft experienced a severe jolt. This movement violently slammed the flight attendant into the ceiling and then into the floor, resulting in 1 serious injury.