As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YD NR 2 KICKS OFF & THERE IS A NOTICEABLE KICK IN THE RT RUDDER. IF RUDDER TRIM MOVES ABOUT A HALF BAR DEFLECTION TO THE LEFT THEN YD 2 DISENGAGES. FLT#4764 REPLACED NR 2 YAW DAMPER IAW AMM. PN DL2233M1-1 SN 3507 SN OFF 3169 PN S24665-134.