# SDR 95ZZZW422

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N520AU
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 23706
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Leaking
- Location: Cabin
- Stage of operation: CR
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZW422

## Discrepancy

PIT - FLT 1406 - FLIGHT EN ROUTE CMH TO TPA WHEN CREW REPORTED A PRESSURIZATION PROBLEM.  AIR LEAK AND LOUD AIR NOISE HEARD FROM FORWARD ENTRY DOOR.  FLIGHT DIVERTED TO PIT WHERE LANDING WAS WITHOUT FURTHER INCIDENT.  MAINTENANCE REPOSITIONED HINGE PIN IN UPPER HINGE COVER.  FOUND AFT OUTFLOW VALVE NOT COMPLETELY CLOSING.  REPLACED OUTFLOW VALVE AND CONTROLLER.  RESEALED INNER AREA AROUND EXTERNAL POWER RECEPTACLE.  REFERENCE USAA950248 .

---
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.