What was found
F/A & PILOTS REPORT WET DOG / DIRTY SOCK ODOR MID CABIN TO FLIGHT DECK UPON LANDING, TURNED OFF BOTH PACKS, TURNED PACK 2 ON, SMELL BEGAN TO DESIPATE. PERFORMED TSM 05-50-00-810-831-A. PACK NR 1 CAUSE OF ODOR. SEE LOG PAGE 2490907 ITEM NR 2 FOR CORRECTIVE ACTION.