As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND NUMBER THREE CYLINDER CRACKED, FAILED COMPRESSION CHECK. CYLINDER TIME SINCE NEW 840 HOURS. ENGINE TIME SINCE MAJOR OVERHAUL 840.9 HOURS. FOUR NEW NITRIDE CYLINDERS WERE INSTALLED AT OVERHAUL. THIS WAS THE LAST CYLINDER TO BE CHANGED DUE TO CRACK. ALL OTHER CYLINDERS PREVIOUSLY CHANGED FOR SAME ISSUE.