What was found
THE ORIGINAL WRITE UP HAPPENED IN ONTARIO. A/C NOW LOCATED MCI. DURING POWER TRANSFER FROM GROUND POWER TO SHIPS POWER SPARKS SEEN COMING FROM OVERHEAD BIN AT 12 C. AREA INSPECTED NO TROUBLE FOUND IN ONT. UPON ARRIVAL TO MCI PILOTS NOTICED C/B POPPED FOR PASSENGER OVERHEAD LIGHTS AND HANDRAIL LIGHTS ON RT SIDE OF A/C. TECHNICIANS PULLED DOWN OVERHEAD BIN BETWEEN 12C TO 15 C FOUND WIRES HAD CHAFED ON OVERHEAD BIN SUPPORT BRACKET AT 12C APPROX 1 FT FROM PLUG P5-3410 WIRES REPAIRED AND RELOCATED.