# SDR AALA202412267654

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 22, 2024
- Submitted: December 26, 2024
- Operation: Air carrier
- Aircraft: [N524UW](https://openairdocs.org/aircraft/N524UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 3977
- Aircraft time: 51,478 hours, 19,558 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Deu
- Part number: Z043H000351A
- Part serial: 043H00021635
- Condition: Warning Message
- Location: Zone 800
- Part time: 36,963 hours, 15,274 cycles
- 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/AALA202412267654

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: FLIGHT ATTENDANT OBSERVED ON GALLEY PANEL THAT DOOR 3R SHOWS CHECK PRESSURE INDICATION DESPITE DOORS SHOWING ARMED IN FLIGHT DECK. MAINTENANCE REPLACED DECODER ENCODER UNIT B 300RH6 (DEU) ON R3 DOOR PER AMM 23-73-47. (AALA202412267654) MAINTENANCE ALSO SERVICED THE R3 DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PER AMM 52-22-00. (AALA202412269751) A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.

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