As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE OIL BREATHER/SEPARATOR TAKES BLOWBY GASES FROM THE ENGINE CRANKCASE AND CENTRIFUGALLY SEPARATES OIL MISTS FROM THEM BEFORE DUMPING THE GASES OVERBOARD THROUGH THE BREATHER TUBE. OIL IS RETURNED TO THE ENGINE SUMP. OIL WAS NOTED SEEPING FROM A CRACK IN THE WELD ATTACHING THE BOTTOM OVERBOARD DRAIN TUBE TO THE OIL SEPARATOR/BREATHER. THE ASSY IS MADE OF LIGHT ALUMINUM AND IS ATTACHED TO THE ENGINE AND SUBJECTED TO VIBRATION.