As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOTS NOTICED SMOKE SMELL IN COCKPIT DURING CRUISE FLIGHT, ON TRIP KHYA-KAPF, FOLLOWED BY OBSERVING SMOKE. CONDUCTED EMERGENCY DESCENT AND LANDING AT KSAV. MAINT TECHNICIAN FOUND 2 AC CIRCUIT BREAKERS TRIPPED IN LEFT WINDSCREEN CIRCUIT AND LEFT WINDSCREEN ELECTROSTATIC FILTER UNIT OVERHEAT DAMAGED, DETERMINED THE FILTER WAS THE SOURCE OF THE SMOKE. TECHNICIAN INSPECTED ADJACENT AREA AND EWIS, NO OTHER DAMAGE NOTED. PLACED WINDOW HEAT SYSTEM ON MEL, GROUND RUN OF AIRCRAFT AND SYSTEMS ACCOMPLISHED AND AIRCRAFT RETURNED TO SERVICE.