As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACRID ELECTRICAL ODOR IN ACFT STRONGEST IN COCKPIT. FOUND ICE PROTECTION LEFT IN "ON" POSITION. ODOR DIMINISHED THROUGHOUT FLIGHT. MX INVESTIGATED ACFT INTERIOR FOR ANY ODOR. NONE NOTED. ATTRIBUTE ODOR TO SEVERAL ICE PROTECTION SWITCHES IE VALVE HEAT AND PITOT HEAT IN "ON" POSITION WITH ACFT ON GROUND IN RDM. NO DEFECTS NOTED. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.