As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A ROUTINE 100 HOUR INSPECTION, THE NR 2 CYLINDER ON THE RT ENG WAS FOUND TO BE CRACKED IN THE INTAKE PORT, BETWEEN THE 14TH & 15TH COOLING FINS. THE TELLTALE SIGN IS BLUE STAIN EMANATING FROM THIS AREA. THIS IS THE 5TH CYLINDER WE HAVE FOUND CRACKED IN THE SAME PLACE ON THIS SET OF ENGS WITH NO EXPLANATION FROM THE MANUFACTURER.