What was found
DURING CRUISE FLIGHT EN ROUTE BWI-DTW, SPARKS BEGAN EMITTING FROM CENTER COCKPIT PEDESTAL UNDER ADF, ARCING LASTED APPROAIMATELY FIVE SECONDS. FLIGHT WAS DIVERTED TO CLE AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED FORWARD PEDESTAL AREA AND FOUND WIRES BURNED AT P1-244 TO SPOILER ACTUATOR. COTTER PIN IN SPOILER ACTUATOR ROD WAS FOUND CHAFED TO WIRE BUNDLE. REPAIRED WIRES AND REROUTED WIRE BUNDLE AWAY FROM SPOILER ACTUATOR ROD, OPERATIONAL CHECK NORMAL.