# SDR DALA2018120306977

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 2, 2018
- Submitted: December 3, 2018
- Operation: Air carrier
- Aircraft: [N855NW](https://openairdocs.org/aircraft/N855NW), registered now
- Make and model: Airbus A330-223
- Registry model: [Airbus A330-223](https://openairdocs.org/model/airbus-a330-223) (OpenAirDocs)
- Aircraft serial: 0621
- Aircraft time: 61,128 hours, 7,752 cycles
- System (JASC): [2710 · Aileron Control System](https://openairdocs.org/jasc/2710)
- Part: Servo
- Condition: Flutter
- Location: Lt Aileron
- Stage of operation: CR
- How discovered: O
- Nature of condition: E
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2018120306977

## Discrepancy

SHIP 3355 - DIV - DIVERTED TO NRT DUE TO REGULAR AND RHYTHMIC VIBRATION NOTED. LEFT OUTBOARD AILERON FLUTTER SHOWS CONSTANT MOVEMENT, MOST EVIDENT ABOVE 250 KIAS. CORRECTIVE ACTION: MAINTENANCE REPLACED BOTH OUTBOARD AILERON SERVOS AND THE #1 FLIGHT CONTROL SECONDARY COMPUTER. LP 5063352

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