As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON DESCENT AT 4500 FT, SMELLED A LIGHT ODOR TOOK PACK 1 OFFLINE AND SMELL WENT AWAY. ( 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) )-PERFORMED LEVEL A DECONTAMINATION OF ECS. NO ODOR AT THIS TIME. THIS CLEARS DMI. PLACARDS REMOVED. MOC NOTIFIED