# SDR AALA202601275671

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 26, 2026
- Submitted: January 27, 2026
- Operation: Air carrier
- Aircraft: [N558UW](https://openairdocs.org/aircraft/N558UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5282
- Aircraft time: 40,892 hours, 17,013 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Cylinder
- Condition: Low Pressure
- Location: Zone 800 - Doors
- Stage of operation: NR
- 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/AALA202601275671

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: DOOR #4 SHOWS CHECK DOOR PRESSURE. MAINTENANCE SERVICED THE R4 DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PER AMM 52-22-00.

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