# SDR SWIA200312307

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 24, 2003
- Submitted: August 27, 2003
- Operation: Air carrier
- Aircraft: [N190SW](https://openairdocs.org/aircraft/N190SW), registered now
- Make and model: Emb EMB-120ER
- Registry model: [EMB EMB-120ER](https://openairdocs.org/model/embraer-emb-120er) (OpenAirDocs)
- Aircraft serial: 120050
- Aircraft time: 39,079 hours, 47,843 cycles
- System (JASC): [2215 · Autopilot Main Servo](https://openairdocs.org/jasc/2215)
- Part: Servo
- Condition: Malfunctioned
- Location: Autopilot Sys
- Stage of operation: UK
- 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/SWIA200312307

## Discrepancy

WITH AUTOPILOT ENGAGED ON EITHER C/A OR F/O SIDE, AP MAKES UNCOMMANDED SLOW ROLL LEFT OR RIGHT.  AUTOPILOT FAIL LIGHT ON MAP DOES NOT ILLUMINATE.  REMOVED AND REPLACED THE AILERON AUTOPILOT SERVO IAW EMB120 MM 27-00-03.  AUTOPILOT OPS CHECK GOOD IAW MM 22-10-00.

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