What was found
ENGINE OPERATION BECAME ROUGH IN-FLIGHT. AIRCRAFT WAS LANDED TO INVESTIGATE THE PROBLEM. FOUND CYLINDER NR 4 HAD CRACKED AND THE HEAD HAD SEPARATED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ENGINE OPERATION BECAME ROUGH IN-FLIGHT. AIRCRAFT WAS LANDED TO INVESTIGATE THE PROBLEM. FOUND CYLINDER NR 4 HAD CRACKED AND THE HEAD HAD SEPARATED.