As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER SHUTDOWN, CREW IDENTIFIED OIL LEAKING FROM LT ENGINE NACELLE. INSPECTION REVEALED OIL FILTER ADAPTER HOUSING HAD 2 EARS CRACKED/BROKEN OFF. OIL FILTER ADAPTER HOUSING HAD SHIFTED ENOUGH THAT SEAL INTEGRITY BROKEN AND OIL WAS LEAKING PAST O-RING. R & R WITH SERVICEABLE UNIT.