As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CUSTOMER REPORTED THAT DURING FLIGHT PILOT HAD A HEADACHE DUE TO OIL SMELL IN THE CABIN. ON TROUBLESHOOTING NOTICED OIL WETNESS WAS FOUND AROUND THE #5 BEARING HOUSING AREA ON #1 ENGINE. FURTHER TROUBLESHOOTING IS GOING ON. (TC# 20190503003)