# SDR UALA2010121704611

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 17, 2010
- Submitted: January 7, 2011
- Operation: Air carrier
- Aircraft: [N791UA](https://openairdocs.org/aircraft/N791UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26933
- Aircraft time: 58,444 hours, 8,575 cycles
- Engine: Pwa PW4090
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Controller
- Part number: S351W200100
- Part serial: 40
- Condition: Faulty
- Location: Apu
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2010121704611

## Discrepancy

APU AUTO SHUTDOWN.  REPLACED APU VALVE  IAW MM AND THE APU CONTROLLER, OPS CKD NORMAL.

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