As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CRUISE THE CREW NOTICED A SLIGHT VIBRATION IN THE LT ENGINE. UPON LANDING A VISUAL INSPECTION WAS CARRIED OUT AND THE NR 11 CYLINDER WAS FOUND TO BE CRACKED FORE AND AFT ALONG THE EXHAUST ROCKER COVER, FROM THE EAR BACK TO THE ROCKER SHAFT. CYLINDER WAS REPLACED WITH AN O/H UNIT AND THE ENGINE WAS GROUND RUN SERVICEABLE.