What was found
(CAN) DURING THE INVESTIGATION OF AN INOPERATIVE STROBE LIGHT IN RT WING A SHORTED STROBE LIGHT WIRE WAS FOUND. HIGH OUTPUT WIRE HAD SHORTED AGAINST THE END OF THE LIGHTNING PROTECTION CONDUIT AT OTBD END. THE RUBBER CHAFE-PROTECTION AROUND THE END OF CUT TUBE WAS INSUFFICIENT IN CIRCUMFERANCE TO PREVENT CHAFING. WIRE WAS BURNED PARTIALLY THROUGH AND CONDUIT PARTIALLY MELTED. ROOT-CAUSE INVESTIGATION CARRIED OUT, DWGS ARE SUFFICIENT IN SHOWING THE ANTI-CHAFE RUBBER INSTALLATION, BUT AN AMENDED WO WILL BE ISSUED FOR FUTURE ACFT AND IN-HOUSE SWEEP CARRIED OUT. MFG CONTACTED AS WELL TO MAKE THEM AWARE OF THIS OCCURRENCE. FLEET BEING MONITORED FOR REPEAT OCCURRENCE`S .