As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON LAST SEGMENT OF OUR APPROACH F/A CALL AND COMPLAIN OF A PUNGY SMELL COMING OUT OF THE A/C ( PACKS 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 )--