As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED VIBRATION DURING GEAR EXTENSION AND RETRACTION. INVESTIGATION SHOWED THAT RIGHT MAIN GEAR ACTUATOR WAS BINDING AND CAUSING GEAR TO OSCILLATE DURING TRANSIT. ACTUATOR EMMITTED A HIGH PITCHED SQUEAL WHILE GEAR WAS IN TRANSIT. ACTUATOR WAS REPLACED WITH SERVICEABLE UNIT AND GEAR RIGGED. OPERATIONS WERE NOTED TO BE NORMAL AND AIRCRAFT RETURNED TO SERVICE.