# SDR AALA202404293723

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 12, 2024
- Submitted: April 29, 2024
- Operation: Air carrier
- Aircraft: [N535UW](https://openairdocs.org/aircraft/N535UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 3993
- Aircraft time: 49,956 hours, 18,724 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Proximity Sensor
- Part number: DHE1141
- Condition: Faulted
- Location: L3 Door
- Stage of operation: IN
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202404293723

## Discrepancy

AIRCRAFT WAS GROUNDED: 3L DOOR DOES NOT INDICATE OPEN ON ECAM AND FLIGHT ATTENDANT PANEL WHEN OPENED.  MAINTENANCE REPLACED 3L DOOR PROXIMITY SWITCH 21WV1 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.

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