# NTSB ENG25LA038: Boeing 777, N793UA, Beijing, China, May 26, 2025

- Type: NTSB incident investigation
- Classification: Incident · Class 3 · Limited · Preliminary report
- Date: May 26, 2025, 22:25 local (22:25 UTC)
- Place: Beijing, China
- Coordinates: 40.079454, 116.603297
- Nearby events: https://openairdocs.org/map.md?lat=40.0795&lon=116.6033&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Defining event: [Takeoff-rejected takeoff: Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340)
- Status: Investigation ongoing
- Investigation class: Class 3
- NTSB office: Aviation Engineering Division
- Parties: FAA, Pratt & Whitney, United Airlines FS
- NTSB case key (mKey): 200307
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ENG25LA038
- NTSB preliminary report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/200307/pdf
- Page: https://openairdocs.org/ntsb/ENG25LA038

## Preliminary report

On May 26, 2025, at approximately 0925 UTC, a Boeing 777-200, registration N793UA, operated as United Airlines flight 889, executed a rejected takeoff at Beijing Capital International Airport when the crew heard a loud bang and followed by a No. 2 (right) engine failure warning. The airplane came to an uneventful stop on the runway, passengers were deplaned, and the airplane was later defueled and towed clear of the runway. The airplane was operated as a Title 14 Code of Federal Regulations Part 121 flight from Beijing Capital International Airport (ZBAA) to San Francisco International Airport (KSFO), San Francisco, California. The airplane data recorders will be downloaded at the NTSB Headquarters in Washington, DC, and the No. 2 engine was removed further examination. The Civil Aviation Administration of China declined to investigate and as such the NTSB is leading the investigation as the State of Registry/Manufacturer in accordance with ICAO Annex 13 guidelines. Additional parties to the investigation include the Federal Aviation Administration (FAA), Boeing, United Airlines, and Pratt & Whitney.

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Takeoff-rejected takeoff: Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340) (defining event); cases with it: [Boeing 777-222, 4 cases](https://openairdocs.org/ntsb-events/340/sequence.md?model=1385219), [All aircraft, 820 cases](https://openairdocs.org/ntsb-events/340/sequence.md)

## Aircraft

- Registration: [N793UA](https://openairdocs.org/aircraft/N793UA), registered now, S/N 26946, built 1997 (OpenAirDocs)
- Reported make and model: BOEING 777 (200)
- 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
- Damage: Minor damage
- Flight: Part 121
- Operator: United Airlines
- Departed: ZBAA, Beijing
- Destination: KSFO, San Francisco, CA

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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