As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT, THE PILOT NOTICED THAT THE ELEVATOR TRIM WAS NOT FUNCTIONING AND REMAINED IN THE NEUTRAL POSITION. AFTER LANDING, WHEN IT WAS INSPECTED, WHAT WAS FOUND WAS THAT THE KEY THAT HOLDS THE SHAFT HAD COME LOOSE ALLOWING THE SHAFT TO FALL OUT AND CAUSE ENTANGLEMENT OF THE ACTUATOR CABLES AROUND THE SHAFT. THE PART WAS REPLACED WITH ANOTHER FOR RECTIFICATION.