What was found
(AUS) NO4 CYLINDER HEAD SEPARATED FROM THE BARREL - INVESTIGATION FOUND THAT THE FAILURE OCCURRED AT THE TOP OF THE THREADED SECTION OF THE HEAD TO BARREL JUNCTION
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(AUS) NO4 CYLINDER HEAD SEPARATED FROM THE BARREL - INVESTIGATION FOUND THAT THE FAILURE OCCURRED AT THE TOP OF THE THREADED SECTION OF THE HEAD TO BARREL JUNCTION