As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) 3 CRACKED CYLINDERS AT SAME TIME. NR 1 CYLINDER HAD A CRACK BETWEEN COOLING FINS. NR 3 CYLINDER CRACKED FROM TOP OF COOLING FIN TO CYLINDER WALL. NR 5 CYLINDER WAS CRACKED 2/3RDS THE WAY AROUND THE CYLINDER HEAD (CAUSING POWER LOSS) NR 1 CYLINDER S/N526-G06-1777 NR 3 CYLINDER S/N526-G06-1910 NR 5 CYLINDER S/N526-F07-5976.