# SDR AALA2019111219011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 10, 2019
- Submitted: November 13, 2019
- Operation: Air carrier
- Aircraft: [N989AU](https://openairdocs.org/aircraft/N989AU), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7307
- Aircraft time: 10,727 hours, 4,108 cycles
- System (JASC): [2760 · Drag Control System](https://openairdocs.org/jasc/2760)
- Part: Speed Brake
- Condition: Malfunctioned
- Stage of operation: DE
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2019111219011

## Discrepancy

AIRCRAFT NOT GROUNDED: PILOT REPORTS DURING DESCENT AT IDLE THRUST AND FLAPS TWO, AC ROLLED LEFT AND RIGHT UNCOMMANDED, ROLL  RECOVERED WHEN SPEED BRAKES WERE MOVED FROM HALF TO FULL. HAPPENED THREE TIMES. F/CTL SYS PAGE  SHOWED AILERON MOVEMENT AND SYMETRICAL SPEEDBRAKE EXTENTION. AUTOPILOT WAS ENGAGED VERY SIMILAR TO WAKE TURBULANCE ENCOUNTER BUT NO AC NEARBY. MAINTENANCE PERFORMED TSM TASKS 27-10-00-810-836-A AND 27-60-00-810-851-A, ALL CHECKS NORMAL, NO FAULTS NOTED. OK FOR SERVICE.

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