As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 5 CYLINDER SUSPECTED CRACKED. CONFIRMED ON DYE PEN WITH A CRACK AT THE INJECTOR BOSS. REMOVED POWER ASSEMBLY FOR DISPOSAL. PISTON WRISTPIN WAS OBSERVED ROTATING WITHIN POWER ASSEMBLY, REMOVED WRISTPIN. WRISTPIN WAS BROKEN IN 2 PIECES WITH SEVERAL SIGNIFICANT PIECES MISSING. CONFERRED WITH CONTINENTAL, NO RECORDED OCCURRENCE OF THIS FAILURE TYPE. CONTINENTAL RECOMMENDED REMOVAL OF OTHER 5 POWER ASSEMBLYS FOR INSPECTION. ENGINE WAS CONDEMNED.