As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD - INFLIGHT JFK-SAN CREW REPORTED CAPTAINS WINDSHIELD CRACKED AFTER ARCING. EMERGENCY DECLARED FLIGHT DIVERTED IAD LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED CAPTAINS WINDSHIELD AND WINDOW HEAT CONTROLLER. SYSTEM GROUND CHECK NORMAL OPERATION.