As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(2) NEW ENGINES WERE INSTALLED IAW MFG MODIFICATIONS, WITH 938.0 HRS SINCE NEW. AIRCRAFT WAS IN FOR A PHASE INSPECTION AND FOUND 3 OUT OF L1 EXHAUST FLANGES ON THE ENGINE CRACKED. ACCORDING TO THE MFG PARTS MANUAL, EXHAUST STIFFENERS ARE NOT USED ON THIS SN AC AND ARE NOT USED WITH MFG INSTALLATION INSTRUCTIONS. (K)