# SDR SWAA2019020729374

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 1, 2019
- Submitted: February 7, 2019
- Operation: Air carrier
- Aircraft: [N211WN](https://openairdocs.org/aircraft/N211WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 34163
- Aircraft time: 48,376 hours, 28,522 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 8300005604
- Part serial: 9336D
- Condition: Faulty
- Location: E&E Bay
- 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/SWAA2019020729374

## Discrepancy

AIR TURNBACK/DECLARED EMERGENCY, APPROACHING 10000, THE CABIN ALTITUDE WARNING HORN SOUNDED. CABIN PRESSURE SHOWED JUST UNDER 10000 / CABIN ALTITUDE WAS REGAIN IN THE MANUAL MODE.  R&R NR 1 CABIN PRESSURE CONTROLLER PER MM.

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