# SDR SWAA983122

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N129SW](https://openairdocs.org/aircraft/N129SW), registered now
- Make and model: Boeing 737-2T4
- Registry model: [Boeing 737-2T4](https://openairdocs.org/model/boeing-737-2t4) (OpenAirDocs)
- Aircraft serial: 22340
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 7110033
- Condition: Failed
- Location: Cabin
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA983122

## Discrepancy

PRESSURIZATION AUTO FUNCTION FAILED ON DEPARTURE.  CABIN PRESSURE CLIMBED TO 2,000 FT  MINUTE.  SWITCHED TO STBY, CABIN RECOVERED.  OK TO CONTINUE PER MEL 21-14 AND SPECIAL PROCEDURE.  REPLACED MAIN (AFT) OUTFLOW VALVE, SYSTEM OPS CK'D PER M/M.  TAG (P/N 987342) (S/N 711003-3) OFF, (P/N 112796) (S/N 148994) ON.

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