# SDR UALA2009072002148

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2009
- Submitted: July 20, 2009
- Operation: Air carrier
- Aircraft: N596UA
- Make and model: Boeing 757222
- Aircraft serial: 28749
- Aircraft time: 45,388 hours, 12,602 cycles
- Engine: Pwa PW2037
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Part number: 32144882
- Part serial: 131
- Condition: Failed
- Location: Bleed Air Sys
- Stage of operation: DE
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2009072002148

## Discrepancy

LEFT ENG BLEED ANNUNCIATOR CYCLED ON OFF THREE TIMES.  REPLACED PRSOV AND PRSOV REGULATOR.  OP CHECK OKAY.

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