As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE NR 2 EXHAUST PORT STACK CRACKED AT MOUNTING FLANGE. THIS PART WAS NEW FROM UNIVAIR. THE EXHAUST STACK ONLY HAD 200 HOURS SINCE NEW. SUBMITTER STATED UNIVAIR STATES THEY HAVE HAD CRACKING PROBLEMS BEFORE. THIS PART IS MANUFACUTRED BY A SUB-CONTRACTOR TO UNIVAIR.