As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 1819 -ATB- AIR TURN BACK TO JFK DUE TO DIRTY SOCK SMELL IN CABIN. RAN ENGINE AND FOUND ODOR TO BE COMING FROM RIGHT ENGINE. PERFORMED BORESCOPE INSPECTION AND NOTED OIL WETTING IN HPC STAGE 2. CORRECTIVE ACTION: NEED ENGINE REPLACEMENT. (0670372)