As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OIL LEAKING FROM OIL FILTER ADAPTER. THIS HAS BEEN A PROBLEM WITH THIS MODEL OF ENGINES IN THE PAST THAT HAS CAUSED ENGINE FIRES. THIS OIL LEAK WAS FOUND POST FLIGHT AND THERE WAS NO EVIDENCE OF A FIRE IN THE ENGINE COMPARTMENT. WE INSTALLED A NEW OIL FILTER ADAPTER GASKET IAW MFG SI1543B AND SB543.