As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT IN RAIN, A SPARK FLEW PAST THE F/O FROM WINDSCREEN WITH SLIGHT SMOKE. MEM MX SUSPECT STATIC DISCHARGE, INSPECTED WIRING AND CONDITION, NO APPARENT SIGNS OF SCREEN DAMAGE ETC, OPERATED WINDSHIELD HEAT SYSTEM CHECKS GOOD. OK FOR RETURN TO SERVICE.