What was found
(CAN) TAIL FLOOD LIGHTS UNSERVICEABLE.TAIL FLOOD LIGHT LAMPS CHECKED. NO FAULT FOUND, VOLTAGE CHECKED & NONE PRESENT. LOCATED CIRCUIT BREAKER & IT WAS FOUND TRIPPED. RESET C/B & TRIPPED RIGHT AWAY. FAULT NOW KNOWN TO BE A DEAD SHORT. SUSPECTING WIRING IN EMPENNAGE SECTION OF A/C. LOCATED PLUG P393 (AFT PRESSURE BULKHEAD CONNECTOR) AND FOUND THAT WIRING HAS BEEN CHAFED BY ACTUAL BACKUP LINER. WIRING REPLACED & WIRING ENCLOSED IN SPIRAL WRAP. TAIL FLOOD LIGHTS CHECKING SERVICEABLE. PLUG P393 ALSO INCLUDES OTHER LIGHTING SYSTEMS & ELECTRIC ELEVATOR TRIM RELAY. NO OTHER WIRING OTHER THAN FLOOD LIGHT WIRING AFFECTED AT THIS TIME.