# SDR DALA2023062105035

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 20, 2023
- Submitted: June 21, 2023
- Operation: Air carrier
- Aircraft: [N874DN](https://openairdocs.org/aircraft/N874DN), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 31985
- Aircraft time: 20,483 hours, 7,868 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Module
- Part number: 10194391001
- Part serial: 2017010077
- Condition: Inoperative
- Location: #1
- Part time: 20,475 hours, 7,865 cycles
- Stage of operation: CR
- 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/DALA2023062105035

## Discrepancy

SHIP 3874 - MISC/DE - DUE TO LOSS OF AUTO CABIN PRESSURE CONTROL. CORRECTIVE ACTION: REPLACED FAULTING CABIN PRESSURE CONTROL MODULE. OPS CHECKS GOOD.

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