As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING LIGHT SWITCH FAILED IN THE ON POSITION. THE SWITCH WAS TURNED OFF AFTER LANDING AND WHILE TAXI TO PARKING NOTED THE LIGHT WAS STILL ON AND THE SWITCH WAS IN THE OFF POSITION. THE LANDING LIGHT WOULD ONLY TURN OFF WITH THE BATTERY SWITCH. THIS IS A CIRCUIT BREAKER SWITCH, IF A SHORT HAD OCCURED THE WIRES WOULD HAVE BURNED UP.