# SDR AALA202502139816

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 12, 2025
- Submitted: February 13, 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: 31,213 hours, 12,864 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Sdac
- Part number: 350E5500204
- Part serial: 0E5011729
- Condition: Faulted
- Location: Zone 800
- Part time: 34,995 hours, 14,240 cycles
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202502139816

## Discrepancy

AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED THAT A RIGHT AFT EMERGENCY EXIT DOOR ECAM MESSAGE DISPLAYED ON TAKEOFF. THE FLIGHT CREW ABORTED THE TAKEOFF AT APPROXIMATELY 90 KNOTS AND RETURNED TO THE GATE. MAINTENANCE FOUND SDAC 1 (SYSTEM DATA ACQUISTION CONCENTRATOR) TO BE FAULTY AND REPLACED IT PER AMM 31-55-34. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.

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