# NTSB ENG27LA001: Boeing 777-222, N796UA, San Francisco, CA, October 6, 2026

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Class 4 · Limited · Investigation open
- Date: October 5, 2026, 17:56 local (Oct 6, 2026, 00:56 UTC)
- Place: San Francisco, CA
- Location: 37.7750° N, 122.4194° W: Placed by OpenAirDocs: center of San Francisco, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.7750&lon=-122.4194&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Defining event: [Initial climb: Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340)
- Highest injury: No injuries
- Injuries: 287 uninjured
- Status: Investigation ongoing
- Investigation class: Class 4 - Basic report with no Prelim publish
- NTSB office: Aviation Engineering Division
- NTSB case key (mKey): 203956
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ENG27LA001
- Latest NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/203956/pdf
- Page: https://openairdocs.org/ntsb/ENG27LA001

## Sequence of events

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

- [Initial climb: Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340) (defining event)

## Aircraft

- Registration: [N796UA](https://openairdocs.org/aircraft/N796UA), registered now, S/N 26931, built 1998 (OpenAirDocs)
- Reported make and model: BOEING 777-222
- 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)
- Flight: Part 121
- Operator: United Airlines Inc
- Registered owner: United Airlines Inc

## Other investigations on N796UA (2)

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.

- [NTSB DCA25WA345](https://openairdocs.org/ntsb/DCA25WA345), Sep 9, 2025: Boeing 777-222 (N796UA), Ezeiza, Argentina, incident, no damage
- [NTSB DCA98WA074](https://openairdocs.org/ntsb/DCA98WA074), Jul 29, 1998: Boeing 777 (N796UA), London Heathrow, United Kingdom, incident, minor damage

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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