As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A ROUTINE INSPECTION, IT WAS NOTED THAT THE STROBE LIGHTS WOULD REMAIN ON AFTER THE SWITCH WAS SELECTED OFF, TROUBLESHOOTING REVEALED THE SWITCH TO BE DEFECTIVE. REPLACED THE SWITCH AND DISASSEMBLED AND FOUND THAT THE SOLDER JOINT HOLDING THE BRAIDED WIRE TO THE BRAKE HAD WELDED ITS SELF TO THE LINE POST. SWITCH WAS REPLACED IAW AD2008-13-17.