# SDR AALA202510239809

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 21, 2025
- Submitted: October 23, 2025
- Operation: Air carrier
- Aircraft: [N549UW](https://openairdocs.org/aircraft/N549UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4932
- Aircraft time: 45,322 hours, 18,104 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Bottle
- Condition: Low Pressure
- Location: Zone 800
- Stage of operation: IN
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202510239809

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: ON FLIGHT ATTENDANT PANEL, MESSAGE INDICATES CHECK DOOR PRESSURE ON DOOR 4L. MAINTENANCE SERVICED THE 4L DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PER AMM 52-13-14.

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