# SDR P5CA0501339

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 31, 2005
- Submitted: April 19, 2005
- Operation: Air carrier
- Aircraft: [N509MC](https://openairdocs.org/aircraft/N509MC), registered now
- Make and model: Boeing 747230B
- Aircraft serial: 21221
- Aircraft time: 112,999 hours, 21,484 cycles
- System (JASC): [2213 · Flight Controller](https://openairdocs.org/jasc/2213)
- Part: Yaw Damper
- Part number: 37572021
- Part serial: 7911102
- Condition: Malfunctioned
- Location: Rudder
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA0501339

## Discrepancy

CREW REPORTED ON TAXI OUT UPPER RUDDER SHOWED 5 DEGREES LEFT AND LOWER RUDDER WAS CENTERED.  AFTER TAXI IN, RUDDER POSITIONS WERE CONFIRMED BY MAINTENANCE.  REPLACED YAW DAMPER COMPUTER AS PER MM 22-16-02.  OPS CHECK PASSED ON GROUND.

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