# SDR AALA202412031734

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 2, 2024
- Submitted: December 3, 2024
- Operation: Air carrier
- Aircraft: [N914UY](https://openairdocs.org/aircraft/N914UY), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6337
- Aircraft time: 31,884 hours, 12,978 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Deu
- Part number: Z043H000351A
- Part serial: 043H00027607
- Condition: Warning Message
- Location: Zone 100
- Part time: 31,886 hours, 12,980 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/AALA202412031734

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: FLIGHT CREW REPORTED THAT THE 1L MAIN CABIN ENTRY DOOR INDICATES CHECK DOOR PRESSURE. MAINTENANCE CONFIRMED THAT THE BOTTLE PRESSSURE WAS GOOD AND REPLACED THE DECODER ENCODER UNIT B (DEU) PER AMM 23-73-47. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.

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