# SDR SWAA2019121639673

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 12, 2019
- Submitted: December 17, 2019
- Operation: Air carrier
- Aircraft: [N908WN](https://openairdocs.org/aircraft/N908WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36620
- Aircraft time: 41,149 hours, 24,555 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Regulator
- Part number: 1074847
- Part serial: 8517
- Condition: Failed
- Location: Nr 2 Engine
- 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/SWAA2019121639673

## Discrepancy

DECLARED EMERGENCY-----------------------------------------DEPARTING FL390 CABIN ALTIMETER HORN AND LIGHT CAME ON FOLLOWED QRH & QRC CABIN ALTITUDE WAS CONTROLLABLE NO DISCOMFIT NOTED BY CREW AND PASSENGER. / R&R #2 ENGINE HIGH STAGE PRESSURE REGULATOR PER AMM.

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