What was found
DURING PREFLIGHT, CREW REPORTED SMOKE COMING FROM THE UPPER SIDEWALL BETWEEN SEATS 12A & 15A. MX INSPECTED THE ACFT AND FOUND A BURNED RECEPTICLE FOR THE OVERHEAD LIGHT AT SEAT 14A. MX R & R THE LIGHT BULB, RECONNECTED THE LIGHT ASSY, OPS TESTED WITH NO DEFECTS, AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE.