As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) WHEN FITTING A NEW CYLINDER KIT TO THE ENGINE IT WAS FOUND THAT THE INCORRECT EXHAUST VALVE WAS FITTED TO THE CYLINDER - EXHAUST VALVE PNO LW16740 (ANGLE VALVE CYLINDER) WAS FITTED INSTEAD OFTHE CORRECT PNO LW19001 - PERSONNEL/MAINTENANCE ERROR - UNAPPROVED PART