As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FOUND CRACK JUST BELOW THE EXHAUST FLANGE WELD. CRACK HAD PROGRESSED HALF WAY AROUND THE BACK OF THE RISER ASSEMBLY. CRACK WAS FOUND DURING A REGULARLY SCHEDULED INSPECTION. CRACK HAD NOT BEEN VISIBLE AT THE PREVIOUS INSPECTION, SO CRACK DID PROGRESS QUITE QUICKLY. RISER ASSEMBLY WAS REPLACED WITH A SERVICEABLE UNIT, WHILE ORIGINAL WAS SENT IN FOR CORE.