As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CF-90-03, INSPECTION A CRACK WAS FOUND AT FORWARD FLANGE. CRACK IS APPROXIMATELY 75 PERCENT AROUND THE CIRCUMFERENCE. THERE IS SEPERATION ALONG THE CRACK. EXHAUST TRAILS ARE FOUND INSIDE SHROUD AND WELL DOWN INTO HOT AIR DUCTING. MUFFLER IDENTIFIED AS HAVING 3 SMALL PIN HOLES IN 2008. HEAT SYSTEM INCAPACITAED AT THAT TIME FOR SAFETY REASONS, MUFFLER REMAINED IN SERVICE.