What was found
AIRCRAFT WAS GROUNDED: AT FL 310 UNCOMMANDED RUDDER L1.5 ON RUDDER TRIM. REMOVED AND REPLACED RUDDER TRIM ACTUATOR AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED: AT FL 310 UNCOMMANDED RUDDER L1.5 ON RUDDER TRIM. REMOVED AND REPLACED RUDDER TRIM ACTUATOR AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.