# SDR SWIA201332618

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2013
- Submitted: January 25, 2013
- Operation: Air carrier
- Aircraft: N221SW
- Make and model: Emb EMB-120ER
- Registry model: [EMB EMB-120ER](https://openairdocs.org/model/embraer-emb-120er) (OpenAirDocs)
- Aircraft serial: 120290
- Aircraft time: 41,731 hours, 59,554 cycles
- System (JASC): [2215 · Autopilot Main Servo](https://openairdocs.org/jasc/2215)
- Part: Servo
- Condition: Failed
- Location: Elevator
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWIA201332618

## Discrepancy

WITH AUTOPILOT SELECTED TO THE CAPTAINS SIDE AND AUTOPILOT ENGAGED, AIRCRAFT STARTED A SHALLOW CLIMB AND THEN AN ABRUPT DESCENT ACCOMPANIED BY A TRIM FAIL WARNING.  AFTER THE AUTOPILOT WAS DISCONNECTED NORMAL FLIGHT RESUMED.  (FLT 5474)  REPLACED ELEVATOR AUTOPILOT SERVO.  P/N 622-5734-002 S/N ON-3622 S/N OFF-9595.

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