As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CAPT L2 SLIDING WINDOW POWER CORD ARCING AND FILLING THE COCKPIT WITH SMOKE. WINDOW HEAT SELECTED OFF AND BREAKER PULLED. POWER CORD DISCONNECTED FROM RECEPTICLE. REMOVED AND REPLACED THE CAPT L2 SLIDING WINDOW, SYSTEM TESTED SERVICEABLE, AIRCRAFT RETURNED TO SERVICE.