As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON THE ELEVATOR CENTER HINGE, FOUND AN3-4A BOLTS LOOSE THROUGH THE SPAR TO P/N 45742-00 RIB AT BL 48. THIS CAUSED ALL THE LOAD TO BE TRANSMITTED INTO THE SPAR FLANGES CRACKING BOTH FLANGES. CHECKED OTHERS, FOUND BOLT NOT UP TO TORQUE. SUBMITTER BELIEVED PAINT DETERIORATION MAY BE THE CAUSE.