As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AD CF-90-03 R2 EXHAUST TYPE CABIN HEATER INSPECTION CARRIED OUT. FOUND EXHAUST CRACKED AT RIGHT HAND INLET FLANGE RADIUS. EXHAUST MUFFLER, LEFT HAND & RIGHT HAND EXHAUST HEADER PIPES REMOVED. SENT TO MANUFACTURER FOR REPAIR & FIT INSPECTION.