Incident Overview
Date: Sunday 24 June 2018
Aircraft Type: Boeing 777-346
Owner/operator: Japan Airlines
Registration Number: JA8944
Location: over Kurihara City –
ÿ Japan
Phase of Flight: En route
Casualties: Fatalities: 0 / Occupants: 515
Component Affected: AircraftAircraft
Investigating Agency: JTSBJTSB
Category: Accident
A JAL 777-346 experienced severe turbulence at FL300, resulting in a cabin attendant falling down and sustaining injuries. The turbulence was likely caused by encountering clear air turbulence within the jet stream.A JAL 777-346 experienced severe turbulence at FL300, resulting in a cabin attendant falling down and sustaining injuries. The turbulence was likely caused by encountering clear air turbulence within the jet stream.
Description
JAL flight JL514, a Boeing 777-346, encountered severe turbulence at FL300. A cabin attendant fell down and was injured. PROBABLE CAUSES In this accident, it is highly probable that the aircraft encountered clear air turbulence while it was passing through the side edge of the jet stream, and because of that the aircraft was so fiercely shaken that the cabin attendant who was on the aft aisle of the aircraft fell down and was injured. With regard to the encountering of the aircraft with clear air turbulence, it is probable that the existence of VWS region on the flight route of the aircraft, which was stronger than the forecast confirmed prior to the flight, was attributable to the encounter.
Primary Cause
Clear air turbulence encountered while passing through the jet stream.Clear air turbulence encountered while passing through the jet stream.Share on:
