As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND LT ELEVATOR TORQUE TUBE MOUNTING FLANGE FROM TUBE ASSY TO ELEVATOR RIVETS WORKING LOOSE, ALLOWING THE LT ELEVATOR TO HAVE 1.5 INCHES OF PLAY. THIS WAS FOUND DURING A 400 HOUR LUBRICATION AND INSPECTION. RECOMMENDATION TO PREVENT RECURRENCE, USE SOLID RIVET NOT BLIND RIVET. (K)