# SDR SWAA022230

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 23, 2002
- Submitted: October 11, 2002
- Operation: Air carrier
- Aircraft: [N634SW](https://openairdocs.org/aircraft/N634SW), registered now
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 27937
- Aircraft time: 21,078 hours, 18,081 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Controller
- Part number: 40631997201AA
- Condition: Erratic
- Location: Cockpit
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA022230

## Discrepancy

AT 28,000 FT, CABIN PRESS WARNING INDICATION DISPLAYED.  C/W EMERGENCY DESCENT.  OUTFLOW VALVE INDICATED CLOSED.  REMOVED AND REPLACED NR 1 PRESS CONTROLLER AND OUTFLOW VALVE PER MM.

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