# SDR UIEA01103

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 28, 2001
- Submitted: November 19, 2001
- Operation: Air carrier
- Aircraft: [N522MC](https://openairdocs.org/aircraft/N522MC), registered now
- Make and model: Boeing 747-2D7B
- Registry model: [Boeing 747-2D7B](https://openairdocs.org/model/boeing-747-2d7b) (OpenAirDocs)
- Aircraft serial: 21783
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Damper
- Condition: Malfunctioned
- Location: Autopilot Sys
- Stage of operation: CL
- How discovered: O
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA01103

## Discrepancy

DURING CLIMB-OUT FROM MIA PASSING FL 33, FELT ABRUPT UNCOMMANDED YAW OF AIRCRAFT.  LOWER RUDDER INDICES SHOWED DISPLACEMENT 5 DEGREES RIGHT OF CENTER.  UPPER RUDDER INDICES SHOWED CENTERED.  TURNED OFF LOWER YAW DAMPER, CONDITION STOPPED.  INITIATED RETURN TO MIA.  (M)

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