# SDR UALA2010102503929

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 2010
- Submitted: November 15, 2010
- Operation: Air carrier
- Aircraft: [N220UA](https://openairdocs.org/aircraft/N220UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30223
- Aircraft time: 39,138 hours, 4,854 cycles
- Engine: Pwa PW40903
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Part number: 32153024
- Part serial: 1835
- Condition: Faulty
- Location: Lt Bleed
- Stage of operation: NR
- 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/UALA2010102503929

## Discrepancy

CREW REPORTS LT BLEED FAULT.  STATUS PAGE INDICATES LT BLEED PRSOV. NEED TO INOP LT BLEED SYSTEM. ACCOMPLISHED NR 1 ENG PRSOV HEALTH CHECK. VALVE FAILED TO OPEN, CAPPED PRESSURE LINE, MUSCLE PRESSURE APPLIED NO LEAKS FOUND. REPLACED PRSOV. ACCOMPLISHED ENG RUN BLEED TEST. BLEED SHIFT NORMAL.

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