As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION OF ELEVATOR TORQUE TUBE REVEALED LOOSE TAPER PINS ATTACHING THE TUBE TO THE COLLAR. ENTIRE TORQUE TUBE ASSEMBLY WAS REPLACED WITH A SERVICEABLE UNIT. THE MM PROVIDES LIMITED CRITERIA FOR RESTORING ORIGINAL SECURITY BETWEEN TUBE AND COLLAR. PERHAPS USING A TAPERED REAMER TO REMOVE A SMALL QUANTITY OF MATERIAL COULD RETURN TUBE ASSEMBLY TO ORIGINAL SECURITY.