As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 4147 CVG-PHL HAD ITT ON NR 2 ENGINE RISE CREW HEARD LOUD BANG AND A/C STARTED SHAKING. CREW FOLLOWED QRH PROCEDURES SHUT DOWN NR 2 ENG AND RETURNED TO CVG. CREW DID DECLARE EMERGENCY. MX ONSITE INSPECTED OUTSIDE OF ENGINE NO DEFECTS FOUND. PERFORMED DFDR DOWNLOAD AND FORWARD ONTO ENGINEERING. REMOVED AND REPLACED RIGHT ENG IAW AMM. ENG RUNS COMPLETE. AIRCRAFT OK FOR SERVICE.