As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAN INFLIGHT T55/14FEB - AT LEVEL OFF RIGHT FORWARD WINDOW HEAT WIRING STARTED SMOKING. REMOVED POWER AND SMOKE DISSAPATED. RETURNED TO MAN AND LANDED WITHOUT INCIDENT. REPLACED RIGHT FORWARD WINDSHIELD AND HEAT CONTROLLER POWER CABLE. SYSTEM GROUND CHECKED NORMAL OPERATION.