What was found
IN DESCENT AROUND 11000 FT DIRTY SOCK SMELL FOLLOWED PROCEDURE ISOLATED PACK 1 AND SMELL DISIPATED ( PACKS - A320 WITH MOD. 30626/MP K6443 (ENHANCED ECS) OR A321 WITH MOD. 157080/MP K17996 (PACK FLOW SELECTOR) AND WITH MOD. 30626/MP K6443 (ENHANCED ECS) ). DESCRIPTION OF ODOR/FUMES: PERSISTENT, DIRTY SOCKS SMELL. APPARENT CABIN SOURCE: CABIN AIR SUPPLY VENTS. FLIGHT DECK. NO VISIBLE SMOKE/HAZE. NO MEDICAL ATTENTION REQUIRED.-R/R PACK 1 COMPRESSOR OUTLET DUCT PACKINGS, CLAMP HALVES AND CLAMP IAW AMM 21-52-23. LEAK CHECK GOOD. NO FAULT NOTED. THIS CLEARS DMI. PLACARD REMOVED, MOC NOTIFIED.