# SDR SWAA2016032250135

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 21, 2016
- Submitted: March 22, 2016
- Operation: Air carrier
- Aircraft: N375SW
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 26583
- Aircraft time: 70,473 hours, 57,850 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 2638106
- Part serial: 82011126
- Condition: Failed
- Location: Cockpit
- 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/SWAA2016032250135

## Discrepancy

AIR TURN BACK & DECLARED EMER.  DURING CLIMB OUT, BETWEEN FL 290 - 300, CABIN ALTITUDE WARNING LIGHT ILLUMINATED.  CABIN ALTITUDE INDICATOR SHOWED APPROX 11000 FT.

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