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| Date: | Tuesday 21 August 2012 |
| Time: | 15:17 |
| Type: |  Airbus A330-323 |
| Owner/operator: | Asiana Airlines |
| Registration: | HL8258 |
| MSN: | 1326 |
| Year of manufacture: | 2012 |
| Engine model: | Pratt & Whitney PW4168A |
| Fatalities: | Fatalities: 0 / Occupants: 221 |
| Other fatalities: | 0 |
| Aircraft damage: | None |
| Category: | Accident |
| Location: | Matsue City, Shimane Prefecture -
 Japan
|
| Phase: | En route |
| Nature: | Passenger - Scheduled |
| Departure airport: | Honolulu-Daniel K. Inouye International Airport, HI (HNL/PHNL) |
| Seoul-Incheon International Airport (ICN/RKSI) | |
| Investigating agency: | JTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Asiana Airlines flight OZ231, an Airbus A330-323, encountered severe turbulence while flying at approximately 40,000 ft over Matsue City, Shimane Prefecture, around 15:17 LT. Two passengers were seriously injured and one passenger was slightly injured.
Probable Causes
It is highly probable that in this accident, serious injury was sustained by a passenger walking in the rear aisle due to the severe shaking of the Aircraft, and that serious injury was sustained by another passenger seated nearby when the passenger removed the seat belt in order to help the injured passenger, the Aircraft shook severely again at that moment.
It is probable that the initial severe shaking of the Aircraft was a result of the Aircraft passing through or nearby cumulonimbus, due to the PIC and the R Captain failing to notice that the weather radar was off, and encountering atmospheric disturbances with severe changes in wind direction and speed coupled with strong updrafts. It is possible that the next shaking of the Aircraft may have been influenced by the PIC’s control operations after disengaging the A/P to stabilize the aircraft.
It is probable that the reason for the PIC and the R Captain failing to notice that the weather radar was off was that their monitoring of the weather conditions and instruments was insufficient
Accident investigation:
 |
|
Sources:
https://www.mlit.go.jp/jtsb/eng-air_report/HL8258.pdf
History of this aircraft
Other occurrences involving this aircraft
| 28 August 2016 | HL8258 | Asiana Airlines | 0 | Seoul-Incheon International Airport (ICN) |  |
sub |
| Damaged on the ground | ||||||
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Apr-2024 09:30 | ASN | Added |
Corrections or additions? ... Edit this accident description
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