As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OIL LEAK REAR OIL ACCESS DOOR LT ENGINE. UPON FURTHER INVESTIGATION IT WAS DISCOVERED THAT CRANKCASE WAS CRACKED BETWEEN NR 4 AND NR 6 CYLINDERS. THIS ENGINE ONLY HAD 361.2 TSO. THE CRANKCASE HAD APPROX 5669 HRS SINCE NEW. THIS ENG WAS INSTALLED MAY 03/2005 REPLACING AN ENGINE WITH THE EXACT SAME CRACK IN THE EXACT SAME LOCATION, THAT ENGINE WAS AT 1749.4 TSO.