# SDR USAA950145

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 15, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N518AU
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 23704
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 7110033
- Condition: Failed
- Location: Cabin
- Part time: 31,336 hours
- 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/USAA950145

## Discrepancy

BOS - FLT 83 - UNABLE TO PRESSURIZE ACFT ON CLIMB-OUT.  FLIGHT DIVERTED TO CLT WHERE LANDING WAS MADE WITHOUT FURTHER INCIDENT.  MAINTENANCE FOUND FWD OUTFLOW VALVE FOR DEFECTIVE SWITCH OPERATION.  ALL CHECKS NORMAL.  (W)

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