What was found
MSP/CLE - FLT 4012 - THE CREW REPORTED SMOKE FROM THE CENTER CONSOLE ALONG WITH SMOKE IN THE CABIN AND COCKPIT. THE AIRCRAFT DIVERTED TO GRB AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND A DUCT HAD BLOWN OFF THE LEFT PACK SYSTEM, THEY RELEASED THE AIRCRAFT IAW MEL 36-11-05, CONTROL NUMBER 184831 DAT 'C'. THE AIRCRAFT WAS RELEASED TO SERVICE. (X)