As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ENGINE WAS CONSUMING OIL WHICH WAS EXITING FROM THE BREATHER. ACCESSORY GEARBOX WAS REMOVED AND SPLIT TO REPLACE THE CARBON SEAL. FURTHER INSPECTION OF THE GEARSHAFT ASSEMBLY SHOWED WEAR ON THE SPLINE SHAFT AND CRACKS ON THE CARBON SEAL FACE. THE STARTER/GENERATOR DRIVE AND IMPELLER WERE REMOVED AND REPLACED AS A UNIT. PART TC: 18,055.