# SDR UALA2011070503322

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 2, 2011
- Submitted: July 28, 2011
- Operation: Air carrier
- Aircraft: [N660UA](https://openairdocs.org/aircraft/N660UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 27115
- Aircraft time: 78,862 hours, 12,681 cycles
- Engine: Pwa PW4060
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Controller
- Part number: 211734220
- Part serial: 21
- Condition: Faulty
- Location: Apu
- Stage of operation: TX
- 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/UALA2011070503322

## Discrepancy

APU DUCT PRESSURE LOW DURING ENGINE START.  APU SWITCH PLACARDED IN FD APUC HAS AN INTERNAL FAULT.  REPLACED APU CONTROLLER.  ACCOMPLISHED IGV CHECK, NO FAULTS NOTED.

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