As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN TURNING ON WINDSHIELD ANTI-FOG, A LOUD POP WAS HEARD AND SPARKS EMITTED FROM CAPTAIN'S WINDSHIELD HEAT SENSOR. FOUND TERMINAL ENDS LOOSE ON CAPT'S WINDSHIELD THERMAL SWITCH. SECURED SAME PER MD88 AMM 30-41. ANTI FOG OPS GOOD. REAPPLIED THERMAL HEAT SINK COMPOUND. (LP6040587)