What was found
WHILE TROUBLESHOOTING INOPERATIVE FLUORESCENT LIGHT AT DOOR ONE LEFT, FOUND WIRE BUNDLE (W3251) ABOVE DOOR ONE LEFT WITH CHAFED AND BROKEN WIRES AND EVIDENCE OF OVERHEAT. *S/D* REPORTED THAT CONNECTOR BRACKET CRUSHED WIRE BUNDLE AGAINST FRAME OF FUSELAGE. CONNECTOR REPLACED AND DAMAGED WIRING REPAIRED. SOURCE OF DAMAGE COULD NOT BE CONFIRMED. SAMPLE INSPECTION OF OTHER AIRCRAFT UNCOVERED NO DISCREPANCIES. FLEET SAMPLING WILL CONTINUE AT ROUTINE CHECKS AS PART OF ONGOING SURVEILLANCE.