As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB OUT, PILOT REPORTED ELEVATOR TRIM JAMMED AND WOULD NOT MOVE. PILOT RETURNED ACFT BACK TO DEPARTURE AND DIFFERENT ACFT DEPARTED. MX INSPECTED ACFT AND FOUND ELEVATOR TRIM ACTUATOR WORN AND CHAIN ON ACTUATOR VERY LOOSE AND BINDING WHENEVER TRIM UP WAS SELECTED. CHAIN WOULD RELEASE WHEN DOWN WAS SELECTED AND LOCK UP AGAIN WHEN UP WAS AGAIN SELECTED. MX REPLACED ELEVATOR TRIM ACTUATOR AND PERFOMED ALL OPS CHECKS-ALL CHECKED NORMAL AND ACFT WAS RETURNED TO SERVICE.