As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, LT PACK AUTOFAIL MESSAGE IS SHOWN ON EICAS. CREW REVERTS TO MANUAL AND SYS SEEMS TO WORK OK. ON APPROACH TO MAD AIRPORT, CREW NOTICES A BURNED ODOR AND SMOKE IN CABIN. CAPTAIN DECIDES TO DISCONNECT THE LT PACK AND CONTINUE THE OPERATION WITH JUST ONE PACK. BURNED ODOR AND SMOKE STOP. ACFT LANDS WITH NO FURTHER INCIDENT.