# SDR AALA202606281155

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 24, 2026
- Submitted: June 28, 2026
- Operation: Air carrier
- Aircraft: [N567UW](https://openairdocs.org/aircraft/N567UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5728
- Aircraft time: 39,993 hours, 16,394 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Deu
- Part number: Z043H0100110
- Part serial: 043H01060698
- Condition: Fault Message
- Location: Zone 100
- Part time: 2,261 hours, 912 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202606281155

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: L1 DOOR WARNING CHECK DOOR PRESSURE. MAINTENANCE FOUND FAULT MESSAGE "DOOR BTL FWD1L/DEU-B(300RH1" AND REPLACED B DECODER ENCODER UNIT (DEU) PER AMM 23-73-47. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO FAULTS NOTED.

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