As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT STARTED TO YAW UNCOMMANDED, VIBRATION THROUGH RUDDER PEDALS THROUGH CLIMB OUT. PERFORMED OPERATIONS CHECK ON YAW DAMPER LINEAR ACTUATOR IAW AMM 22-22-01, PASSED TEST. PERFORMED RUDDER OPERATIONS CHECK IAW AMM 2721-00. OPERATIONS CHECKED NORMAL. OK FOR SERVICE.