# SDR 20000417SH015

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 16, 2000
- Submitted: April 17, 2000
- Operation: Air carrier
- Aircraft: [N127GT](https://openairdocs.org/aircraft/N127GT), registered now
- Make and model: Lear 55LEAR
- Aircraft serial: 067
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Servo
- Part number: 66004163
- Part serial: 1053M
- Condition: Failed
- Location: Yaw Damper
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20000417SH015

## Discrepancy

SECONDARY YAW DAMPER SERVO SN 1053M FAILED TO ENGAGE. THIS SERVO HAS ONLY 79.5 HOURS SINCE LEARJET FACTORY OVERHAUL.  THIS SERVO SHOULD GO 3,000 HOURS BETWEEN MANDATORY OVERHAULS.  INSTALLED A WARRANTY REPLACEMENT SERVO AND OPS CHECKED GOOD.  (X)

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