As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TROUBLESHOOTING FOR A SMALL OIL LEAK, THE NR 3 CYLINDER ON THE LT ENG WAS FOUND TO BE CRACKED INTO THE INTAKE PORT BETWEEN THE 14TH & 15TH CYLINDER FINS. THIS IS THE 4TH SUCH CRACKED CYLINDER WE HAVE FOUND ON THIS PAIR OF ENGS. WE HAVE NOT RECEIVED ANY EXPLANATION FROM MFG.