As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MUSTY MOLD SMELL ON DESCENT THRU 18000 FT ISOLATED PACK 1 PER COM PROCEDURE AND SMELL WENT AWAY ( PACKS A320 WITH MOD 31283/MP P7125 (FWC H2-F1 STND) AND WITH MOD. 30626/MP K6443 (ENHANCED ECS) - FAULT CAUTIONS ASSOCIATED WITH OPERATIVE SIDE NOT DISPLAYED )--