# SDR SWAA2017082115827

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2017
- Submitted: August 22, 2017
- Operation: Air carrier
- Aircraft: N390SW
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 26593
- Aircraft time: 72,656 hours, 58,269 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 7638102
- Part serial: P43
- Condition: Faulty
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2017082115827

## Discrepancy

AIR TURNBACK, DURING CLIMB OUT AT 13,500'. THE CABIN ALT WARNING HORN SOUNDED CABIN CLIMBING AT 800 FPM CABIN ALT ABOVE 10,000' NO "AUTO FAIL" LIGHT.  R&R CABIN PRESSURE CONTROLLER IAW AMM.

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