As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE OIL LEAK DETERMINED TO BE PROP PITCH CONTROL GASKET. INSTALLED THREE MORE NEW GASKETS WITH SAME OIL LEAK. GASKETS HAVE THE WORD 'CANADA' MARKED ON THE EDGE OF THE TACH GENERATOR MOUNT FACE. GASKETS WERE INSTALLED PER GARRETT MM.