What was found
DURNING BOARDING RAMP PERSONNEL NOTICED A " BURNING ELECTRICAL" ODOR IN AFT CARGO COMPARTMENT. REMOVED CENTER CEILING PANEL IN AFT CARGO COMPARTMENT INSPECTED WIRING FOUND NO DEFECTS. REINSTALLED CENTER CEILING PANEL, FOUND DEBRIS IN CARGO LIGHT REMOVED DEBRIS AND ODOR DID NOT RETURN. LEFT CARGO LIGHTS ON FOR 1HR WITH NO ODOR RETURING. NO FUTHER DEFECTS NOTED AT THIS TIME. RETURNED TO SERVICE. ALSO PERFORMED A FOLLOW-ON INSP WITH NO OTHER DEFECTS FOUND EXCEPT FOR A LOOSE CONNECTOR PLUG TO THE RECIRC FAN, WHICH WAS THEN SAFETY WIRED IN PLACE.