# SDR AALA2019022529003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 20, 2019
- Submitted: February 25, 2019
- Operation: Air carrier
- Aircraft: [N563UW](https://openairdocs.org/aircraft/N563UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5368
- Aircraft time: 20,986 hours, 8,273 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fcu
- Part number: C12850AC02
- Part serial: C12850003640
- Condition: Faulty
- Part time: 41,905 hours, 21,265 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2019022529003

## Discrepancy

AFTER TAKEOFF, SHORTLY AFTER POWER REDUCTION, AUTOTHROTTLES FAILED,  SPEED WINDOW OPENED WITH 40 KT DIFFERENCE FROM ACTUAL SPEED.  THE AIRCRAFT WAS GROUNDED.   REPLACED THE FCU IAW AMM 22-97-00. OPS TESTED GOOD.

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