As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG BURN ODOR AND SMOKE IN COCKPIT AND CABIN, RETURNED TO DEPARTURE. PERFORMED TROUBLESHOOTING IAW TSM 05-50-00-810-831-A. FOUND AIR PACK 1 TO BE THE CAUSE ECAM " AIR PACK 1 REGUL FAULT". TROUBLESHOT IAW TSM 21-61-00-810-824-A. ON GCI INSPECTION OF PACK 1, FOUND ACM TO BE SEIZED CAUSING HOT AIR BURNING ODOR GOING INTO CABIN. R & R PCMCIA CARD IAW AMM 36-00-000-001A & 31-00-400-001A.