# SDR 2001UALA00059

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 27, 2001
- Submitted: February 21, 2001
- Operation: Air carrier
- Aircraft: N915UA
- Make and model: Boeing 737522
- Aircraft serial: 25382
- Aircraft time: 27,415 hours, 20,193 cycles
- Engine: Ge CFM56*
- Engine time: 25,336 hours, 17,394 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Regulator
- Condition: Failed
- Location: Bleed Air
- Component: Regulator-Bleed, Alidsg, 1074923
- Stage of operation: TO
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2001UALA00059

## Discrepancy

RETURNED TO DEN DUE TO A PROBLEM WITH THE NR 1 BLEED AIR SYSTEM.  *S/D*  BLEED AIR VALVE WOULD NOT OPEN AFTER BLEEDS OFF TAKEOFF.  REPLACED THE BLEED AIR REGULATOR.

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