# SDR SWAA000133

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2000
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N678AA](https://openairdocs.org/aircraft/N678AA), registered now
- Make and model: Boeing 737-3A4
- Registry model: [Boeing 737-3A4](https://openairdocs.org/model/boeing-737-3a4) (OpenAirDocs)
- Aircraft serial: 23290
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Controler
- Part number: 7638101
- Condition: Erratic
- Location: Cabin Pressure
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA000133

## Discrepancy

DIVERSION, DURING CRUISE, FLIGHT LEVEL AT 37,000 FEET, CABIN ALTITUDE CLIMBED 10,000 FEET, SETTING OFF THE WARNING HORN.  INITIATED EMERGENCY DESCENT USING THE MANUAL CONTROLLER.  REMOVED AND REPLACED CABIN PRESSURE CONTROLLER PER MM.

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