# SDR SWAA000512

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 15, 2000
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N653SW
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 28398
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Yaw Damper
- Condition: Malfunctioned
- Location: Tail
- Stage of operation: AP
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA000512

## Discrepancy

ACFT EXPERIENCED A MOMENTARY UNCOMMANDED YAW DURING APPROACH.  REMOVED AND REPLACED YAW DAMPER COUPLER, P/N 4036952-906, S/N 94023899, RUDDER PCU, P/N 65-44861-12, S/N 3425AC, AND SOLENOID VALVE, P/N 881600-1001, S/N 16126 PER MM.

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