As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH FOR LANDING (TOUCH AND GO'S), ONE OF THE CYLINDER HEADS BLEW OFF AND THERE WAS A SUDDEN REDUCTION OF POWER. THE AIRCRAFT LANDED SAFELY WITHOUT DAMAGE OR INJURIES. THE CYLINDER WAS A NEW PMA CYLINDER WITH APPROX. 1100 HOURS TIME IN SERVICE. THE CAUSE OF THE FAILURE IS CURRENTLY UNDER INVESTIGATION BY THE NTSB.