As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT SMELLED FOUL ODOR IN COCKPIT AND CABIN, AFTER SHUTTING OFF PACK ONE THE SMELL DISAPATED .SUSPECT PACK 1 ( 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) )--