# SDR SWAA990060

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 10, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N713SW
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 27847
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 71211997101AB
- Condition: Failed
- Location: E/E Bay
- Stage of operation: DE
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA990060

## Discrepancy

AUTO FAIL LIGHT ON PRESSURIZATION PANEL ILLUMINATED ON DESCENT.  ALTERNATE FAILED TO TAKE OVER RIGHT AWAY.  REGAINED CONTROL IN MANUAL AND THEN TRIED ALTERNATE AGAIN AND IT  WORKED IN ALTERNATE.  REMOVED AND REPLACED NR 1 PRESSURE CONTROLLER PER M/M.  GROUND CHECKS  GOOD PER M/M.

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