As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED THAT THE LANDING LIGHT WAS NOT WORKING. DURING TROUBLESHOOTING FOUND THAT THE LANDING LIGHT CIRCUIT BREAKER WAS FOUND TO BE AT FAULT. THE CIRCUIT BREAKER WAS INSTALLED ON 03 APRIL 2010 WITH A TSN OF 1507 WITH AN ESTEMATED 6028 CYCLES. INSTALLED A NEW LANDING LIGHT CIRCUIT BREAKER AND OPS CHECKED WAS GOOD.