# SDR 2001UALA00133

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 20, 2001
- Submitted: March 21, 2001
- Operation: Air carrier
- Aircraft: N565UA
- Make and model: Boeing 757222
- Aircraft serial: 26669
- Aircraft time: 29,067 hours, 10,710 cycles
- Engine: Pwa PW2037
- System (JASC): [7531 · Compressor Bleed Governor](https://openairdocs.org/jasc/7531)
- Part: Controller
- Part number: 1074741
- Part serial: 45
- Condition: Defective
- Location: Bleed Air
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2001UALA00133

## Discrepancy

RIGHT DUCT PRESSURE FLUCTUATING BETWEEN 25 PSI AND 40 PSI.  EPR FLUCTUATES BETWEEN 1.16 AND 1.28 FL410.  *S/D*  REPLACED THE RT PRSOV AND PRSOV CONTROLLER.  PROBLEM WAS MOST LIKELY CAUSED BY THE PRSOV CONTROLLER.

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