As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING UNSCHEDULED MAINTENANCE OF FLIGHT CONTROL SYSTEM, FOUND LEFT ELEVATOR TORQUE TUBE LOOSE CREATING EXCESSIVE FREE OF PLAY OF CONTROL SURFACE. SIX OF THE 8 RIVETS WERE SMOKING. ELEVATOR STOPS WERE NOT ADJUSTED CORRECTLY WHICH CAN CAUSE OR CONTRIBUTE TO THIS PROBLEM. (M)