As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT NOTED AN OIL LEAK ON THE LEFT ENGINE WHILE IN CRUISE FLIGHT AND REDUCED POWER WITH AN UNEVENTFUL LANDING PERFORMED. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND A LARGE HOLE IN THE BREATHER TUBE BETWEEN THE COMPRESSOR AND TURBINE LEAKING OIL AS WELL AS THE STARTER DRIVE LEAKING AT THE CRANKCASE. BREATHER TUBE REPLACED WITH NEW PART AS WELL AS THE INSTALLATION OF A NEW GASKET PN 653749. GROUND RAN NO LEAKS NOTED AND THE AIR CARFT WAS RETURNED TO SERVICE.