# SDR 2003FA0000033

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 14, 2003
- Submitted: January 14, 2003
- Operation: Air carrier
- Aircraft: [N520SC](https://openairdocs.org/aircraft/N520SC), registered now
- Make and model: Lear 55LEAR
- Aircraft serial: 087
- Aircraft time: 8,168 hours, 5,471 cycles
- Engine: Garrtt TFE731*
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Servo
- Part number: 501126402
- Part serial: 1166
- Condition: Chafed
- Location: Yaw
- Part time: 8,168 hours, 5,471 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2003FA0000033

## Discrepancy

THE SECONDARY YAW SERVO CABLE KEEPER WAS RUBBING THE PRIMARY YAW SERVO CABLE ON THE RT SIDE CAUSING EXCESSIVE WEAR ON BOTH COMPONENTS.

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