# NTSB ENG10WA044: Boeing 777, N219UA, Tokyo, Japan, July 28, 2010

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Foreign investigation
- Date: July 28, 2010, 09:04 local (09:04 UTC)
- Place: Tokyo, Japan
- Highest injury: No injuries
- Status: Led by another country's authority
- NTSB office: Aviation Engineering Division
- Lead agency: Other
- NTSB case key (mKey): 76930
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ENG10WA044
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/76930/pdf
- Page: https://openairdocs.org/ntsb/ENG10WA044

## Factual narrative

On July 28, 2010, at about 0904 UTC, the crew of a United Airlines Boeing 777-200B airplane, N219UA, operating as flight 852, heard a loud bang from the right hand (number 2) engine while climbing through 11,000 feet above Mean Sea Level (MSL), followed after 3-4 seconds by a high pitch grinding noise. Within a few more seconds it was reported that all engine instrumentation for the number 2 engine had decreased to zero. An emergency was declared and the airplane descended to 10,000 foot MSL. Approximately 90,000 lbs of fuel was jettisoned before landing with the airplane being approximately 12,000 pounds overweight. The engine failure was contained but metal debris was observed in the tailpipe. The number 2 engine a PW4090-3, S/N 222178, was removed from the airplane at the United Airlines facility in Narita, Japan and at the direction of the Japanese Transportation Safety Board was shipped to the United Airlines facilities in San Francisco, California, United States of America for teardown and further examination by the National Transportation Safety Board. The accident is being investigated by the Japanese Transportation Safety Board Ministry of Land, Infrastructure, Transport and Tourism 2-1-2, Kasumigaseki, Chiyoda-ku Tokyo 100-8918 Japan Tel.: (81) 3 5253 8486 Fax: (81) 3 5253 1680 E-mail: jtsb@mlit.go.jp AFTN: RJTDYAYA Cable: KOKUKYOKU-TOKYO Website: http://www.mlit.go.jp/jtsb/english.html This report is for informational purposes only and contains only information obtained for, or released by the Government of Japan.

## Aircraft

- Registration: [N219UA](https://openairdocs.org/aircraft/N219UA), registered now, S/N 30551, built 2001 (OpenAirDocs)
- Reported make and model: BOEING 777 (206)
- Registry model: [Boeing 777-222](https://openairdocs.org/model/boeing-777-222) (registry code 1385219) (OpenAirDocs)
- Registry engine: [Pratt & Whitney PW4000 series](https://openairdocs.org/engine/pratt-whitney-pw4000-series) (registry code 52119, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Engines: PRATT AND WHITNEY PW4090 89550 lbs thrust turbo fan
- Damage: No damage
- Flight: Part 121
- Registered owner: United Airlines
- Departed: NRT, Tokyo, Japan
- Destination: SFO, San Francisco, CA
- Flight plan: Unknown
- Airport: NRT, Narita International Airport

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

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