# SDR UALA2011110706038

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 7, 2011
- Submitted: November 11, 2011
- Operation: Air carrier
- Aircraft: [N665UA](https://openairdocs.org/aircraft/N665UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 29237
- Aircraft time: 47,995 hours, 12,983 cycles
- Engine: Pwa PW4056
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Control Valve
- Part number: 97980612
- Part serial: 176
- Condition: Failed
- Location: Apu
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011110706038

## Discrepancy

APU PNEUMATICS FAILED TO PRESSURIZE ON ENGINE START.  4 PSI ONLY.  COMPLIED WITH MEL 3611G APU BLEED VALVE LIGHT OPS NORMAL.  APU SURGE CONTROL VALVE.  LEAK AND OP'S CHECKED GOOD.

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