As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A SIGNIFICANT VIBRATION IN REAR OF ACFT DURING ENTIRE CLIMB OUT. VIBRATION DIMINISHED AT CRUISE BUT KEPT REOCCURRING FROM TIME TO TIME. FLIGHT DIVERTED & LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED BLUE RUDDER CONTROL SERVO. ALSO, REMOVED AND REPLACED CONTROL SERVO ROD ENDS. PERFORMED OPS CHECKS AS PER AMM 27-24-00. OPS CHECK GOOD.