As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOTICED A SHARP ABRUPT YAW INPUT SHORTLY AFTER NOSE WHEEL LIFT OFF. NO ABNORMAL WINDS OR AIRCRAFT WAKE EXISTING. YAW WAS SIGNIFICIANT, NO INPUTS NOTED IN RUDDER PEDALS BY PILOT FLYING. CHECKED YAW DAMP FOR FAULTS, NONE. REPLACED RUDDER PCU PER M/M RII. C/W OK TO CLOSE ACCESS PANELS. REPLACED RUDDER INPUT ROD.