As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PISTON CRACKED ON NR 3 CYL. TOTAL TIME SINCE O/H MAJOR, 48 HOURS. CRACK WAS FROM LOWER OIL RING GROOVE UPWARD APPROX 1.5 INCHES. CYLINDER AND ALL COMPONENTS CHECK OUT GOOD. ALL SPECS CHECK GOOD. TELEDYNE CONTINENTAL INSPECTED AND STATED THE FAILED PISTON WAS DUE TO BEING ASSEMBLED INCORRECTLY NOT MANUFACTURING. THIS DIAGNOSIS IS IN DISAGREEMENT BY THE A & P TECH., THE SAFETY OFFICER AND OWNER.