# SDR UALA2012102606156

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 25, 2012
- Submitted: November 15, 2012
- Operation: Air carrier
- Aircraft: [N796UA](https://openairdocs.org/aircraft/N796UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26931
- Aircraft time: 65,774 hours, 9,273 cycles
- Engine: Pwa PW40903
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Valve
- Part number: 8102294
- Part serial: 6
- Condition: Faulty
- Location: Ac Bay
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012102606156

## Discrepancy

LEFT TRIM AIR PRSOV STATUS MSG WITH TRIM AIR L EICAS MSG.  LEFT TRIM AIR PRSOV LOCKED IN CLOSED POSITION PER MEL.  ACP'D REPLACEMENT OF VALVE.

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