What was found
CABIN FUME EVENT DURING DESENT. ODOR OF MOISTURE & MUSTY LAUNDRY. MOSTLY PAX CABIN. FA NOTIFIED US AFTER LANDING. TROUBLESHOT IAW TSM 05-50-00-810-831-A. PERFORMED ENGINE RUN WITH FLIGHT CREW. UNABLE TO DUPLICATE ODO AT THIS TIME. ACCOMPLISHED PACK BURN OUT OF PACK 1 & PACK 2 REF AMM 21-00-00-615-004. REMOVED AND REPLACED CABIN RECIRCULATION FILTERS IAW AMM 21-21-41. OPS CHECKED GOOD. AIRCRAFT OK FOR CONTINOUS SERVICE.