# SDR UALA2012040902174

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2012
- Submitted: April 10, 2012
- Operation: Air carrier
- Aircraft: [N665UA](https://openairdocs.org/aircraft/N665UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 29237
- Aircraft time: 49,499 hours, 13,325 cycles
- Engine: Pwa PW4056
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Valve
- Part number: 97980612
- Part serial: 220
- Condition: Faulty
- Location: Apu
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012040902174

## Discrepancy

APU AIR PRESS CYCLES FOR NO REASON.  DEFERRED PNEUMATICS INOP PER MEL.  REPLACED APU SURGE VALVE.  RAN APU FOR 30 MINUTES WITH DIFFERENT LOADS.  NO SURGING NOTED.

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