As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE DISASSEMBLING THE STABILATOR TORQUE TUBE, SUBMITTER FOUND BOTH (2 EACH) CLOSE TOLERANCE BOLTS VERY CORRODED. SUBMITTER BELIEVES THESE SHOULD BE REPLACED BY AGE OF 30 YEARS. DISASSEMBLED ANOTHER STABILATOR HORN AND FOUND THE SAME CONDITION.