What was found
DURING TAXI-OUT FROM BASE, CAPT. NOTED SMOKE EMITTING FROM LIGHT SWITCH AREA AT THE LOWER LH CONSOLE. THEY TAXIIED BACK HOME BASE UNEVENTFULLY AND HANDED OVER THE AIRCRAFT TO MAINTENANCE. IT WAS IMMEDIATELY APPARENT THAT THE RH STROBE LIGHT CIRCUIT BREAKER SWITCH DID NOT SHUT THE STROBE LIGHTS OFF WHEN ACTUATED WITH THE BATTERY ON. BATTERIES WERE DISCONNECTED AND AN INSPECTION OF THE RH STROBE LIGHT SYSTEM WAS CONDUCTED. SEVERAL WIRES ALONG THE LENGTH OF THE CIRCUIT WERE DARK WITH A BURNT SMELL, AND A CHAFE TO GROUND WAS NOTED AT THE WINGTIP CONNECTOR TO THE STROBE LIGHTS. THE CB SWITCH WAS SLIGHTLY BULGED FROM OVERHEATING WITH A BURNT SMELL. NO OTHER SYSTEMS WERE MALFUNCTIONING, AND THE AFFECTED WIRES DID NO APPARENT DAMAGE TO THE SURROUNDING WIRING OR COMPONENTS. THE AFFECTED WIRING WAS REPAIRED OR REPLACED PER MM PRACTICES, ENSURING PROPER CLEARANACE AND CHAFE PROTECTION. THE AFFECTED 7 AMP CIRCUIT BREAKER SWITCH WAS REPLACED, AND A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED. TOTAL TIME ON THE AFFECTED CIRCUIT BREAKER SWITCH COULD NOT BE DETERMINED, AND IS ASSUMED TO BE ORIGINAL.