As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED A HOLE BURNED IN RIGHT SIDE OF THE LOWER ENGINE COWL. UPON FURTHER INVESTIGATION, FOUND RIGHT SIDE EXHAUST STACK HAD A 1 INCH BY 1.50 INCH HOLE IN IT WITH A CRACK EXTENDING FROM THE HOLE. THE CRACK EXTENDED APPROXIMATELY HALF OF THE CIRCUMFERENCE OF THE STACK. THE HOLE WAS ON THE OUTSIDE PORTION OF THE STACK AT THE POINT WHERE IT BENDS TOWARDS THE MUFFLER.