# SDR DALA2026030601549

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2026
- Submitted: March 6, 2026
- Operation: Air carrier
- Aircraft: [N373DX](https://openairdocs.org/aircraft/N373DX), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 8734
- Aircraft time: 22,364 hours, 9,632 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Faulted
- Location: Cabin Pressure
- Stage of operation: CR
- How discovered: O
- Nature of condition: J, P
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026030601549

## Discrepancy

DIV - TO DEN DUE TO CAB PR SYS 1 FAULT APPEARING AT FL340, FOLLOWED BY INTERMITTENT EXCESSIVE CABIN ALTITUDE MESSAGES AND LOSS OF CABIN ALTITUDE DISPLAY.   REPLACED CPC 1. PASSENGER MASKS WERE NOT DEPLOYED. (LP 7212202)

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