What was found
(CAN) PILOT REPORTED SUDDEN ROUGHNESS IN ENGINE DURING CRUISE FLIGHT. POST-FLI GHT INSPECTION FOUND NR 2 CYLINDER TO BE CRACKED CIRCUMFERENCIALLY IN THE ALLOY HEAD MATERIAL WHERE IT JOINS WITH THE STEEL BARREL. WITH THE NR 2 CYLINDER REM OVED THE CRACK WAS FOUND TO BE FROM THE 2 O'CLOCK POSITION AROUND THE BOTTOM TO THE 10 O'CLOCK POSITION OF THE CYLINDER HEAD.