# SDR SWAA2020010840259

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 6, 2020
- Submitted: January 8, 2020
- Operation: Air carrier
- Aircraft: [N282WN](https://openairdocs.org/aircraft/N282WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32534
- Aircraft time: 43,418 hours, 25,684 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Control Module
- Part number: 8143924002
- Part serial: C94120070
- Condition: Faulty
- Location: Cockpit
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2020010840259

## Discrepancy

DECLARED EMERGENCY------------------------------------------------CABIN ALTITUDE WARNING HORN AND LIGHT ILLUMINATED AT CRUISE AT FL400. CABIN ALTITUDE MAX 11,000. SELECTED MANUAL AND PRESSURE RETURNED TO NORMAL. / R&R CABIN PRESSURE CONTROL MODULE IAW AMM.

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