# SDR 753003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 14, 2007
- Submitted: September 15, 2007
- Operation: Air carrier
- Aircraft: N753SA
- Make and model: Boeing 747228F
- Aircraft serial: 21787
- Aircraft time: 111,379 hours, 21,756 cycles
- System (JASC): [2200 · Auto Flight System](https://openairdocs.org/jasc/2200)
- Part: Yaw Damper
- Part number: 19642122
- Part serial: 7403101
- Condition: Faulty
- Location: Rudder
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: J, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/753003

## Discrepancy

HAD SEVERAL HARD RUDDER KICKS.  FOUND THAT SHUTTING DOWN LOWER YAW DAMPER PROBLEM WENT AWAY.  DEFERRED ITEM IN ACCORDANCE WITH DDPG PROCEDURES 22-3.  REMOVED AND REPLACED LOWER YAW DAMPER COMPUTER IN ACCORDANCE WITH AMM 22-16-02. OPERATIONAL CHECK GOOD. DEFERRAL CLOSED.

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