# SDR SWAA2019121839782

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 2019
- Submitted: December 18, 2019
- Operation: Air carrier
- Aircraft: N565WN
- Make and model: Boeing 737-76Q
- Registry model: [Boeing 737-76Q](https://openairdocs.org/model/boeing-737-76q) (OpenAirDocs)
- Aircraft serial: 30282
- Aircraft time: 48,418 hours, 32,549 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 40631997201AB
- Part serial: 0119785
- Condition: Faulty
- Location: Aft Cabin
- Stage of operation: DE
- 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/SWAA2019121839782

## Discrepancy

DECLARED EMERGENCY--------------------------------------------------WHILE DESCENDING THROUGH 30,000  / FT. CABIN RATE INCREASED AT 4000 FPM OR GREATER.  CABIN CLIMBED THROUGH 10,000 FT. PERFORMED A RAPID DEPRESSURIZATION DESCENT AND ACCOMPLISHED THE QRC "CABIN ALT WARNING, RAPID DEPRESSURIZATION" AND THE QRH RAPID DEPRESSURIZATION CHECKLIST. / R&R AFT OUTFLOW VALVE IAW AMM.

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