# SDR UALA2012070103499

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 29, 2012
- Submitted: August 10, 2012
- Operation: Air carrier
- Aircraft: [N655UA](https://openairdocs.org/aircraft/N655UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 25393
- Aircraft time: 83,501 hours, 13,382 cycles
- Engine: Pwa PW4060
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Controller
- Part number: 77328915
- Part serial: 142
- Condition: Faulty
- Location: Nr 2 Engine
- Stage of operation: CR
- 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/UALA2012070103499

## Discrepancy

RIGHT ENG HPSOV EICAS ILLUMINATED.  OCCURED WHEN POWER STABILIZED AT LEVEL OFF.  TROUBLESHOT HPSOV-HPC SYSTEM.  REPLACED HPC FOR FAILURE.  PERFORMED AIR SUPPLY BITE SYSTEM TEST, OPS CHECK GOOD.

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