# SDR 98UAL900177

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 1, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N932UA
- Make and model: Boeing 737522
- Aircraft serial: 26658
- Engine: Ge CFM56*
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Coupler
- Condition: Failed
- Location: Yaw Damper
- Component: Honeywell, 4030952906
- Stage of operation: TO
- Nature of condition: F
- Precautionary procedure: C, D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98UAL900177

## Discrepancy

CAPTAIN AND FIRST OFFICER DETECTED UNCOMMANDED RUDDER MOVEMENT ON TAKEOFF ROLL.  *S/D*  REPLACED YAW DAMPER COUPLER, OPS CHECK GOOD.

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