As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INOPERATIVE LANDING LIGHT TRACED TO A MELTED SWITCH AND BURNED WIRES AT THE SWITCH. PROBLEM TRACED TO FLIGHT SCHOOL USING LANDING LIGHT FULL TIME AS A RECOGNITION LIGHT. SWITCH AND WIRING CANNOT STAND A CONTINUOUS 20 AMP LOAD OF THE 250 WATT LAMP.