# SDR 2001UALA00143

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 2001
- Submitted: March 21, 2001
- Operation: Air carrier
- Aircraft: N7299U
- Make and model: Boeing 727222
- Aircraft serial: 21894
- Aircraft time: 62,728 hours, 36,111 cycles
- Engine: Pwa JT8D15
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 71100305
- Condition: Failed
- Location: Cabin Pressure
- Stage of operation: CL
- 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/2001UALA00143

## Discrepancy

AIRCRAFT DIVERTED TO DTW WITH PRESSURIZATION PROBLEMS.  *S/D*  MAINTENANCE FOUND MANY SMALL DISCREPANCIES WITH THE SYSTEM AND REPLACED SOME COMPONENTS.  REPLACED OUTFLOW VALVE AND CABIN PRESSURE CONTROLLER.

---
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.