# SDR 2005UALA00113

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 2005
- Submitted: March 3, 2005
- Operation: Air carrier
- Aircraft: [N386UA](https://openairdocs.org/aircraft/N386UA), registered now
- Make and model: Boeing 737322
- Aircraft serial: 24661
- Aircraft time: 42,914 hours, 29,928 cycles
- Engine: Ge CFM56*
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Relief Valve
- Part number: 106120921
- Part serial: 890844
- Condition: Out Of Adjust
- Location: Cabin Pressure
- Stage of operation: CR
- 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/2005UALA00113

## Discrepancy

FLIGHT DIVERTED TO CMH DUE TO LOSS OF CABIN PRESSURE.   THE INBOARD SAFETY RELIEF VALVE FAILED OPERATIONAL TEST AND WAS REPLACED.  THE CABIN PRESSURE CONTROLLER WAS ALSO REPLACED PRECAUTIONARY.

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