# SDR AALA202503195794

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 18, 2025
- Submitted: March 19, 2025
- Operation: Air carrier
- Aircraft: [N920US](https://openairdocs.org/aircraft/N920US), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6490
- Aircraft time: 31,443 hours, 12,980 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Proximity Sensor
- Part number: DHE1141
- Condition: False Activation
- Location: Zone 800
- Stage of operation: TO
- How discovered: O
- Nature of condition: N
- Precautionary procedure: C, O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202503195794

## Discrepancy

AIRCRAFT WAS GROUNDED: AN ABORTED TAKEOFF WAS PERFORMED AT 85 KNOTS DUE TO THE FLIGHT CREW REPORTING A CAUTION MESSAGE DISPLAYED DURING TAKE OFF ROLL FOR THE RIGHT AFT EMERGENCY EXT DOOR. MAINTENANCE REPLACED THE DETECTOR PROXIMITY SWITCH 61WV2 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 52-71-13.

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