What was found
RIGHT SIDE EXHAUST/MUFFLER ASSY BRACKET CRACKED AND BECAME SEPARATED AT FIREWALL MOUNT CONTACTING COWLING CAUSING HEAT DAMAGE TO LOWER COMPOSITE COWLING. UPON REMOVAL, NOTED THE INTERNAL BAFFLE IN THE MUFFLER HAD ALSO RECEIVED HEAT DAMAGE, BECAME CORRODED, AND SEPARATED FROM THE WALL OF MUFFLER IN SMALL SECTIONS, BECOMING LODGED IN EXIT PIPE OF EXHAUST ASSY PARTIALLY BLOCKING THE EXIT PORT.