# SDR 2001UALA00297

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 22, 2001
- Submitted: April 12, 2001
- Operation: Air carrier
- Aircraft: [N952UA](https://openairdocs.org/aircraft/N952UA), registered now
- Make and model: Boeing 737522
- Aircraft serial: 26699
- Aircraft time: 23,266 hours, 14,474 cycles
- Engine: Ge CFM56*
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Regulator
- Condition: Failed
- Location: Nr 1 Engine
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2001UALA00297

## Discrepancy

AIRCRAFT UNABLE TO PRESSURIZE. SUPPLEMENTAL DATA UPDATE THE NR 1 ENGINE HIGH STAGE REGULATOR FAILED.  REPLACED NR 1 ENGINE HIGH STAGE REGULATOR.

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