As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INFLIGHT, OBSERVED STRONG ARCING FROM WIRE BUNDLE TO CAPTAIN'S WINDSHIELD HEAT CONNECTOR BLOCK. TURNED WINDSHIELD HEAT OFF- ARCING STOPPED. REMOVED LT WINDSHIELD REFERENCE AMM TASK 56-10-01-000-801 AND INSTALLED SERVICEABLE LT WINDSHIELD FROM STOCK REFERENCE AMM TASK 56-10-01-400-801, PARA 5B DID NOT REMOVE WINDSHIELD WIPER ARM. RESET LT WINDSHIELD HT C/B AND PULLED PLACARDS. INSPECTED RING TERMINALS ON WINDSHIELD AND FOUND TO BE SERVICEABLE. RETURNED TO SERVICE.