# NTSB ENG13WA003: Boeing 737-846, Tokyo, Japan, Japan, October 20, 2012

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Foreign investigation
- Date: October 20, 2012, 10:43 local (10:43 UTC)
- Place: Tokyo, Japan, Japan
- Highest injury: No injuries
- Injuries: 144 uninjured
- Status: Led by another country's authority
- NTSB office: Aviation Engineering Division
- Lead agency: Other
- NTSB case key (mKey): 85513
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ENG13WA003
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/85513/pdf
- Page: https://openairdocs.org/ntsb/ENG13WA003

## Factual narrative

On October 20, 2012, a Boeing 737-800, registered JA342J, operated by JAL Express, departed from Tokyo International Airport and declared an emergency No. 1 engine failure during climb. The pilot reported low engine RPM and high exhaust gas temperature warnings. Flight crew operating manual procedures were followed and the No. 1 engine was shutdown before the aircraft returned to Tokyo International Airport for an uneventful single engine landing. No injuries were reported to the 144 passengers and crew members on board. Damage to the high pressure compressor and turbine blades was noted during a preliminary inspection by ground crews. The Japan Transport Safety Board (JTSB) is investigating the incident. The NTSB has was notified of the incident under the provisions of Annex 13 to the Convention of Civil Aviation as the state of manufacture and design for multiple components on the CFM56-7B engine. All inquiries concerning this incident should be directed to the JTSB at: Director-General Secretariat of the Aircraft and Railway Accidents Investigation Commission Ministry of Land, Infrastructure and Transport 2-1-2, Kasumigaseki, Chiyoda-ku Tokyo 100-8918 Japan Tel.: (81) 3 5253 8813 E-mail: ARAIC@mlit.go.jp Fax: (81) 3 5253 1677 AFTN: RJTDYAYA Cable: KOKUKYOKU-TOKYO Website: http://www.motnet.go.jp/araic/index.html

## Aircraft

- Registration: JA342J (not matched to a registry record)
- Reported make and model: BOEING 737-846
- Serial number: 39191
- Engines: CFM CFM56-7B24 turbo fan
- Damage: No damage
- Flight: Non-U.S., commercial
- Airworthiness certificate: Standard, Transport
- Departed: HND, Tokyo, Japan
- Destination: MYJ, Matsuyama
- Flight plan: Unknown
- Airport: HND, Tokyo International Airport

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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