# SDR SWIA201333469

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2013
- Submitted: May 17, 2013
- Operation: Air carrier
- Aircraft: N294SW
- Make and model: Emb EMB-120ER
- Registry model: [EMB EMB-120ER](https://openairdocs.org/model/embraer-emb-120er) (OpenAirDocs)
- Aircraft serial: 120321
- Aircraft time: 37,360 hours, 53,876 cycles
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: Servo
- Condition: Failed
- Location: Rudder
- Stage of operation: CR
- 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/SWIA201333469

## Discrepancy

YAW DAMPER KICKED THE RUDDER CAUSING A 5 TO 10 DEGREE YAW IN FLIGHT.  REPLACED RUDDER SERVO. PERFORMED SERVO MX TORQUE CHECK AND INSTALLED SERVO.  PERFORMED OPS CHECK OF AUTOPILOT SYS, YAW DAMPER, OPS CHECKED GOOD IAW AMM.

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