As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) RT FORWARD MAIN NAV LIGHT ASSEMBLY PN 30-2683-14 NOT ILLUMINATING. UPON INSPECTION THE BULB WAS SERVICEABLE. HOWEVER, THE ASSEMBLY WIRES TO ENVIRONMENTAL SPLICE WERE FOUND OVERHEATED AND THE SECURING TYE-WRAPS WERE DISCOLORED AND BRITTLE INDICATING AN OVERHEATED ELECTRICAL CIRCUIT.