As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 4099 REPORTED A VIBRATION DURING CRUISE FLIGHT. THE VIBRATION DID NOT APPEAR TO BE ASSOCIATED WITH THE PROPELLERS. THE CREW DECIDED TO DIVERT TO MIDDLETOWN. MAINTENANCE FOUND THE INPUT CONTROL ROD AT THE RIGHT HAND AILERON WORN. BUSHING WAS INSTALLED PER RD 8-57-087 AND ROD END FOR CONTROL ROD WAS REPLACED. AIRCRAFT WAS TEST FLOWN, TEST FLIGHT SATISFACTORY. AIRCRAFT RETURNED TO SERVICE.