# SDR AALA201712089025

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 7, 2017
- Submitted: December 8, 2017
- Operation: Air carrier
- Aircraft: [N587UW](https://openairdocs.org/aircraft/N587UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6236
- Aircraft time: 11,684 hours, 4,523 cycles
- System (JASC): [3414 · Airspeed/Mach Indicator](https://openairdocs.org/jasc/3414)
- Part: Air Data Module
- Part number: 87232329V07
- Part serial: 2974
- Condition: Faulty
- Location: Zone 100
- Part time: 11,684 hours, 4,523 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/AALA201712089025

## Discrepancy

AIRCRAFT WAS GROUNDED. REJECTED TAKE-OFF PERFORMED BETWEEN 60 AND 100 KTS UNSURE OF ACTUAL AIRSPEED. DURING TAKE-OFF ROLL A DIFFERENCE OF 40KTS INDICATED AIRSPEED PROMOTED A REJECTED TAKE-OFF UNSURE OF WHICH INDICATOR WAS ACCURATE CAPTAIN OR FIRST OFFICER. REMOVED AIR DATA MODULE, CURRENT STATUS GOOD.

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