As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLT WITH A/P ON A/C YAWED SUDDENLY BOTH RT & LT YAWING MOVEMENTS LESSENED AT SPEEDS 250 KIAS OR LESS. YAWING MOVEMENTS WOULD LAST APPROXIMATELY 1-2 MINUTES THAN SUBSIDE FOR 10 MINUTES AND THAN BEGIN AGAIN. REMOVED AND REPLACED LEFT & RIGHT YAW DAMPER ACTUATORS IAW AMM 22-22-01, OPS CHECK GOOD.