As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW AND CUSTOMERS REPORTED STRONG SULFUR SMOKE ODOR WITH VISIBLE SMOKE MID CABIN. FLIGHT CREW SHUTOFF THE LTV SYS UPON RECEIVING THE REPORT. A PACK 2 FAIL THEN OCCURED AND CREW DESELECTED THE PACK. THE ODOR AND SMOKE DISSIPATED QUICKLY AFTER THE LTV AND PACK WERE SELECTED OFF. THE ODOR & SMOKE GRADUALLY DIMINISHED. FOUND NR 2 ACM FAILED.