As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ANNUAL INSPECTION, FOUND HEAVY CORROSION AT FORWARD END OF ENGINE MOUNT MAIN BEAMS AND DIAGONAL BRACE TUBES ON BOTH SIDES. CAUSE OF CORROSION-PROXIMITY OF EXHAUST COLLECTORS TO MOUNT. CORRECTIVE ACTION-INSTALL HEAT SHIELDS AFTER PAINTING WITH HEATPROOF PAINT.