# SDR AALA202108276864

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 26, 2021
- Submitted: August 27, 2021
- Operation: Air carrier
- Aircraft: [N551UW](https://openairdocs.org/aircraft/N551UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4940
- Aircraft time: 32,292 hours, 12,167 cycles
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Air Data Module
- Part number: 46502003030316
- Part serial: 2567
- Condition: Faulted
- Location: Nr 2
- Part time: 59,390 hours, 26,152 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/AALA202108276864

## Discrepancy

AIRCRAFT WAS GROUNDED: NAVIGATION AIR DATA REFERENCE 2 FAULT ON TAKE OFF AT 75KS RESULT IN REJECTED TAKE OFF. REMOVED AND REPLACED AIR DATA REFERENCE 2 PER AMM 34-12-34.

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