What was found
FLT#773, BOS-AUA. 'STRONG DIRTY SOCK AND MOSTLY ODOR DURING DESCENT UNTIL LANDING. ODOR WAS STRONGER IN THE REAR OF THE CABIN BUT ALSO OCCURRED IN THE COCKPIT AND MID-CABIN AS WELL ( PACKS ). W/O 1241328 TSI ODOR EVENT / SERVICE CHECK / AND ECS LVL 3 DECON ACCOMPLISHED. NO FURTHER ODOR DETECTED.), LOG PAGE 3695683, ITEMS 1 & 2, LOG PAGE 3695684, ITEM 2 (REMOVED AND REPLACED ECS RECIRC (HEPA) FILTERS IAW AMM 21-21-41).