As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) APPROXIMATELY 60 HOURS OUT OF OVERHAUL THE ENGINE OIL CONSUMPTION WAS FOUND TO BE EXCESSIVE. INVESTIGATION FOUND THE OIL WAS BEING VENTED OVERBOARD AND WAS TROUBLESHOT TO THE ACCESSORY GEARBOX BREATHER IMPELLER CARBON SEAL. AFTER REPLACEMENT THE OIL CONSUMPTION RETURNED TO NORMAL.