What happened
The aircraft was operating during a cruise descent phase at an altitude of 20,000 feet mean sea level when it encountered significant atmospheric turbulence. The pilot reported that the flight crew was actively maneuvering to avoid cumulonimbus clouds in the area. During this deviation, the aircraft inadvertently entered one of these storm cells.
At the time of the encounter, the seat belt sign was illuminated, indicating expected rough air. Despite the warning, the turbulence caused injuries among the cabin crew members on board. One crew member sustained serious injuries, while others also reported being hurt during the event.
The flight continued to its intended destination without further incident and landed safely. No structural damage to the aircraft was reported, and the primary outcome of the event was the physical injury to the cabin staff due to the unexpected severity of the turbulence within the cloud mass.