# SDR AALA202607087223

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 4, 2026
- Submitted: July 8, 2026
- Operation: Air carrier
- Aircraft: [N557UW](https://openairdocs.org/aircraft/N557UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5269
- Aircraft time: 43,853 hours, 18,048 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Bottle
- Condition: Low Pressure
- Location: Zone 800
- Stage of operation: TX
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202607087223

## Discrepancy

AIRCRAFT WAS GROUNDED: 4L DOOR SHOWING CHECK DOOR PRESSURE ON FLIGHT ATTENDANTS PANEL UPON ARMING. MAINTENANCE SERVICED 4L DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PER AMM 52-10-00.

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