# SDR UALA2008111301002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 2008
- Submitted: December 19, 2008
- Operation: Air carrier
- Aircraft: [N302UA](https://openairdocs.org/aircraft/N302UA), registered now
- Make and model: Boeing 737322
- Aircraft serial: 23643
- Aircraft time: 60,220 hours, 35,669 cycles
- Engine: Cfmint CFM563C1
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 7110033
- Part serial: 101570
- Condition: Frozen
- Location: Cabin Pressure
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2008111301002

## Discrepancy

FLIGHT DIVERTED WITH A PRESSURIZATION PROBLEM.  OUTFLOW VALVE FREEZING UP. REPLACED OUTFLOW VALVE AND HEAT GASKET.  AWAITING SHOP FINDINGS.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.