# SDR SF20050923

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 23, 2005
- Submitted: September 24, 2005
- Operation: Air carrier
- Aircraft: N123
- Make and model: Saab SF340A
- Registry model: [Saab SF340A](https://openairdocs.org/model/saab-scania-sf340a) (OpenAirDocs)
- Aircraft serial: 123XS
- System (JASC): [2721 · Rudder Tab Control System](https://openairdocs.org/jasc/2721)
- Part: Trim System
- Condition: Malfunctioned
- Location: Ailerons
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SF20050923

## Discrepancy

FLIGHT 7578, IAD-ABE, PILOT CALLED ON THE RADIO SHORTLY AFTER TAKEOFF REPORTING AN AUTO TRIM LIGHT WARNING WITH YAW DAMPER ENGAGED.  PILOT REPORTED YAW TRIM WAS 4 UNITS TO THE RIGHT AND 1/2 UNIT AILERON TRIM. AIRCRAFT RETURNED TO FIELD.

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