# SDR UALA2010042001314

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2010
- Submitted: April 26, 2010
- Operation: Air carrier
- Aircraft: [N544UA](https://openairdocs.org/aircraft/N544UA), registered now
- Make and model: Boeing 757222
- Aircraft serial: 25322
- Aircraft time: 69,378 hours, 19,951 cycles
- Engine: Pwa PW2040
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Actuator
- Part number: 20224806U1
- Part serial: 57
- Condition: Faulty
- Location: Outflow Valve
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2010042001314

## Discrepancy

CABIN PRESSURIZATION OUTFLOW VALVE WILL NOT CLOSE IN MANUAL MODE.  REPLACED FAULTY OUTFLOW VALVE ACTUATOR, OPS CK NORMAL.

---
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.