What was found
CLT - FL 1024 - CREW AND PASSENGERS HEARD A LOUD THUMPING NOISE COMING FROM THE TOP OF THE AIRCRAFT DURING CLIMB. AT APPROX 5,000 FEET, CREW DECIDED TO RETURN TO FIELD AT CLT. FLIGHT LANDED WITH NO FURTHER INCIDENT. MAINTENANCE DISCOVERED DUCT TAPE AT UPPER RIGHT CORNER OF LEFT FORWARD ENTRY DOOR. REMOVED SAME. SUBMITTER STATES, SUSPECT TAPE CAME FROM JETWAY CURTAIN, C-14. (M)