On 10 Sep 2011, a DOUGLAS DC-8-62F operated by Air Transport International was involved in an aviation accident near Yakota, Japan. No fatalities were reported. Investigators recorded the probable cause as: The passenger's decision to ignore the fasten seatbelt sign, resulting in serious injury to the passenger during a turbulence encounter. This summary draws on records from NTSB; 7 related events involving the same aircraft type or operator are linked below.
A transport category airplane encountered moderate turbulence at flight level 270. A passenger without a fastened seatbelt was seriously injured when thrown into the ceiling and seat. The captain diverted to the nearest airport.
Incident Overview
A transport category airplane was cruising at flight level 270 in international airspace near thunderstorms. The captain reported that he illuminated the cabin fasten seatbelt sign and ordered the cabin crew to take their seats and remain seated. Subsequently, the airplane entered an area of continuous moderate turbulence.
Sequence of Events
Fifteen minutes into the turbulence encounter, a passenger who did not have her seatbelt fastened sustained serious injury. She struck the ceiling of the airplane, then the armrest of her seat and the floor. The captain declared a medical emergency and diverted to the nearest airport.
Aftermath
The passenger was hospitalized for more than 48 hours. No other injuries were reported. The aircraft continued to its destination after the passenger was removed.