# SDR UALA2010050301484

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 1, 2010
- Submitted: May 5, 2010
- Operation: Air carrier
- Aircraft: [N791UA](https://openairdocs.org/aircraft/N791UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26933
- Aircraft time: 55,361 hours, 8,186 cycles
- Engine: Pwa PW4090
- System (JASC): [7530 · Compressor Bleed Control](https://openairdocs.org/jasc/7530)
- Part: Shutoff Valve
- Part number: S332W3012
- Part serial: 198
- Condition: Faulty
- Location: Left
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2010050301484

## Discrepancy

STATUS MSG NACELLE VENT VALVE LT.  VALVE FOUND DEFECTIVE.  REPLACED NACELLE ZONE VENTILATION SHUTOFF VALVE.

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