# SDR DALA2023112209637

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 22, 2023
- Submitted: November 22, 2023
- Operation: Air carrier
- Aircraft: [N837DN](https://openairdocs.org/aircraft/N837DN), registered now
- Make and model: Boeing 737932ER
- Aircraft serial: 31948
- Aircraft time: 28,034 hours, 10,847 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Valve
- Condition: Inoperative
- Location: Unknown
- Stage of operation: DE
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2023112209637

## Discrepancy

SHIP 3837 -DE/PRESS- DECLARED EMERGENCY DUE TO CABIN ALTITUDE WARNING AT TOP OF DESCENT. CORRECTIVE ACTION: PERFORMED SINGLE PACK CONFIDENCE CHECK. NO TROUBLE FOUND. REACTIVATED LEFT PACK. REPLACED COCKPIT TRIM AIR VALVE. OPS CHECKS GOOD.

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