What was found
THE CREW REPORTED AN OCCASIONAL BURNING RUBBER ODOR DURING DEPARTURE AND DECENT. LANDED WITHOUT INCIDENT, MAINTENANCE INSPECTED AND FOUND THE ODOR TO BE COMING FROM THE NR 1 PACK. MAINTENNACE INSPECTED THE ACFT AND FOUND A MELTED DUCT ON THE DUAL TEMP CONTROL VALVE. R & R THE AFFECTED DUCT, OPS TESTED WITH NO DEFECTS, ACFT APPROVED FOR RETURN TO SERVICE.