ASN Wikibase Occurrence # 177428
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Tuesday 30 June 2015 |
| Time: | 08:20 |
| Type: |  Boeing 737-4Q3 |
| Owner/operator: | Japan Transocean Air |
| Registration: | JA8525 |
| MSN: | 26605/2752 |
| Fatalities: | Fatalities: 0 / Occupants: 37 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | 55 km east-northeast of Tanegashima island, Kagoshima prefecture -
 Japan
|
| Phase: | En route |
| Nature: | Passenger - Scheduled |
| Departure airport: | Okinawa-Naha Airport (OKA/ROAH) |
| Osaka-Kansai International Airport (KIX/RJBB) | |
| Investigating agency: | JTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Japan Transocean flight 002 from Naha-Okinawa to Kansai, a Boeing 737-4Q3, suffered cabin pressure problem. Both systems were inoperative. The flight crew dropped the cabin oxygen masks, and made a emergency descent from 11000 m (FL360) to 10000 ft. The plane continued to the destination, and a safe landing was carried out at KIX. No injury were reported.
ROBABLE CAUSES
It is highly probable that the serious incident occurred because the supply from the both Bleed Air systems were stopped, abnormal decompression was occurred in the cabin.
As for the stoppage of the both Bleed Air supply, it is highly probable that PRSOV was closed because the Bleed Air temperature was rising and exceeding the specified values in a state of occurrence of failures due to the cracks in the both systems of 450 ºF
Thermostat, and malfunctions were generated due to deteriorations at the both systems of Pre-cooler Control Valve
Accident investigation:
 |
|
Sources:
http://web.archive.org/web/20150704015838/http://news.tbs.co.jp/newseye/tbs_newseye2529491.html
http://web.archive.org/web/20150703022419/http://www3.nhk.or.jp:80/news/html/20150630/k10010133641000.html
https://headlines.yahoo.co.jp:443/hl?a=20150630-00000052-asahi-soci
https://headlines.yahoo.co.jp:443/hl?a=20150630-00000095-mai-soci
https://headlines.yahoo.co.jp:443/hl?a=20150630-00000602-san-soci
https://headlines.yahoo.co.jp:443/hl?a=20150630-00000148-jij-soci
http://www.jal.co.jp/jta/st/st.html
History of this aircraft
Other occurrences involving this aircraft
| 7 April 2015 | JA8525 | Japan Transocean Air | 0 | New Ishigaki Airport (ISG/ROIG) | |
min |
| Bird strike | ||||||
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 30-Jun-2015 14:07 | isamuel | Added |
| 04-Aug-2023 17:17 | harro | Updated |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation