As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELEVATOR CHANNEL HAS 7 LOCATIONS WHERE BUCKING BAR SLIPPED OFF OF RIVET TAIL AND INDENTED STRUCTURE. CRACKS HAVE FORMED AT ALL 7 LOCATIONS. THIS DEFECT IS ORIGINAL FROM FACTORY. SUBMITTER STATED THIS IS THE 2ND PART WITH THE SAME DEFECT FOUND.