As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB AND MOST OF FLIGHT INTO MQT, CREW NOTED A SLIGHT VIBRATION ON BOTH YOKES. NOTE: VIBRATION WAS AT AIRSPEEDS OF 230-310. AUTO PILOT ON/OR OFF HAD NO AFFECT. REPLACED LEFT AILERON BUSHING AND HARDWARE. PASSED FUNCTIONAL CHECK FLIGHT. AIRCRAFT RETURNED TO SERVICE. (M)