As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX- SMOKE OBSERVED COMING FROM CAPTAIN'S WINDSHIELD HEATER ELEMENT WITH WARM-UP POSITION SELECTED. STOPS WHEN WINDSHIELD IS SELECTED OFF. PERFORMED OPERATIONAL CHECK OF WINDSHIELD WIPER IAW DHC-8 MM 30-42-00 PG 501. OPERATIONAL CHECK GOOD. APPLIED WINDSHIELD SURFACE SEAL TO PILOTS WINDSHIELD. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.