# SDR UPS08651670

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 14, 2008
- Submitted: February 14, 2008
- Operation: Air carrier
- Aircraft: [N315UP](https://openairdocs.org/aircraft/N315UP), registered now
- Make and model: Boeing 767-34AF
- Registry model: [Boeing 767-34AF](https://openairdocs.org/model/boeing-767-34af) (OpenAirDocs)
- Aircraft serial: 27743
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: Yaw Damper
- Condition: Inoperative
- Location: Flight Control
- 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/UPS08651670

## Discrepancy

A/C YAWED CONTINUOUSLY LT AND RT AT HIGH SPEEDS.   T/S FOUND M509 RT UPR YAW DAMPER SERVO LVDT RESISTANCE VALUE ABNORMAL AND M317 O/B SPOILER NR 12 PCA LVDT PIN 8 SHROTED TO CASING. BOTH M509 RT UPPER YAW DAMPER SERVO AND M317 O/B SPOILER NR 12 PCA REPLACED. YAW DAMPER SERVO INSTALLATION TEST O/B SPOILER NR 12 PCA INSTALLATION TEST NORMAL.

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