# SDR UALA2012121007154

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 10, 2012
- Submitted: December 11, 2012
- Operation: Air carrier
- Aircraft: [N646UA](https://openairdocs.org/aircraft/N646UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 25283
- Aircraft time: 90,364 hours, 14,429 cycles
- Engine: Pwa PW4060
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Condition: Failed
- Location: Bleed Air Sys
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012121007154

## Discrepancy

NR 2 ENGINE PRSOV FAILED HEALTH CHECK, NEEDS REPLACEMENT.  (SEE AMSITM  3642073 FOR FAILED MM STEP).  REMOVED AND REPLACED NR 2 ENGINE PRSOV.

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