As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FUEL OIL HEATER FAILED INTERNALLY CAUSING FUEL TO CONTAMINATE THE OIL SYSTEM AND EXIT SPINNER AND NOSE COWL. THE OPERATOR EXPRESSED THAT THIS IS NOT A COMMON OCCURENCE AND THAT THIS WAS SUSPECTED TO BE THE RESULT OF TSN IN SERVICE OF THE APPLIANCE AND THE EFFFECTS OF VIBRATION.