What was found
DURING CLIMBOUT, CREW REPORTED THAT AT FL240 THE FLIGHT CREW AND F/A EXPERIENCED A STRONG ODOR OF SMOKE. THE ACFT RETURNED TO DEPARTURE WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE ACFT AND PLACED THE PACK ON MEL 21-51-00-3, CAT-C, AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE. MAINTENANCE R & R THE NR 1 ACM, OPERATIONALLY TESTED WITH NO DEFECTS, CLEARED THE MEL, AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE.