Incident Overview
An airplane was in cruise flight at an altitude of 37,000 feet when it approached an area of thunderstorm activity. The seat belt sign was activated, and flight attendants were instructed to return to their seats. The flight crew responded to a traffic collision alert by initiating a descent and a right turn before attempting to navigate through the weather along the best available route.
Sequence of Events
During this maneuvering, the airplane experienced moderate turbulence lasting approximately 30 seconds. The turbulence resulted in injuries to two flight attendants, with one sustaining serious injuries. Despite the incident, the flight proceeded to its scheduled destination airport and landed without further issues.
Investigation Findings
Data recovered from the airplane's flight data recorder indicated that the upset was consistent with the airplane's encounter with turbulence. No other irregularities were noted, and the remainder of the flight was uneventful.