What was found
DURING DESCENT, THE FLIGHT CREW & PAX SMELT SMOKE, THE STRONGEST WAS IN THE AFT CABIN AREA. AT THE TIME, THE CREW WAS UNCERTAIN OF THE SOURCE & AN EMER WAS DECLARED. ONCE ON THE GND & PAX DEPLANED, TROUBLESHOOTING WITH MXC & FIELD SERVICE WAS ACCOMPLISHED. IT WAS DETERMINED THAT THE COCKPIT ACM HAD FAILED. THE PAC WAS DEFERRED & THE ACFT CONTINUED FOR A SCHEDULED MX EVENT LATER THAT DAY.