# Incident 20111221029339I: Boeing 757-222, Spokane, WA, December 21, 2011

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: December 21, 2011, 23:45 local time
- Place: Spokane, WA
- Airport: Spokane International
- Damage: No damage
- Phase of flight: Takeoff: Climb Out
- Operating rules: Air carrier (Part 121)
- Operator: UALA
- Location: 47.6190° N, 117.5352° W: Placed by OpenAirDocs at SPOKANE INTL (GEG), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.6190&lon=-117.5352&mi=10
- Aircraft: N520UA, a cancelled registration (https://openairdocs.org/deregistered/N520UA-2018-08-28) (OpenAirDocs)
- Registry model: Boeing 757-222 (registry code 1384956, https://openairdocs.org/model/boeing-757-222) (OpenAirDocs)
- Registry engine: Pratt & Whitney PW2040 (registry code 52121, https://openairdocs.org/engine/pratt-whitney-pw2040) (OpenAirDocs)
- Reported make and model: BOEING 757-222
- People aboard: 0
- Fatal injuries: 0
- Other injuries: 0
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20111221029339I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

THE AIRCRAFT DEPARTED GEG. DURING GEAR AND FLAP RETRACTION, THE AIRCRAFT LOST HYDRAULIC PRESSURE AND QUANTITY ON THE LEFT HYDRAULIC SYSTEM. THE CREW RETURNED TO GEG AND PERFORMED THE ALTERNATE GEAR EXTENSION. THE LANDING WAS UNEVENTFUL.MAINTENANCE FOUND A LARGE QUANTITY OF HYDRAULIC FLUID LEAKING FROM THE UNDER BELLY OF THE AIRCRAFT FORWARD OF THE WING-BODY FAIRING. SUBSEQUENT INSPECTION FOUND THE LEAK TO BE CAUSED BY A BROKEN O-RING IN THE LEADING EDGE BYPASS VALVE.THE O-RING WAS REPLACED AND THE LEFT HYDRAULIC SYSTEM WAS SERVICED AND OPERATIONALLY CHECKED. THE OPERATIONAL CHECK WAS GOOD AND NO LEAKS WERE NOTED. THE AIRCRAFT WAS RELEASED TO SERVICE.

## Other reports on N520UA (1)

Matched to the same aircraft by N-number and date.

- [Incident 20060222002579I](https://openairdocs.org/incident/20060222002579I), Feb 22, 2006: Boeing 757222 (N520UA), Omaha, NE. (-23) N520UA, B-757-222, being operated as united airlines flight 696 enroute from den to oma advised ATC that they had a flight control problem. The crew had…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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