As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE, THE NR 4 ENGINE EXPERIENCED COMPRESSOR STALL AT TOP OF DESCENT. CREW FOLLOWED COM PROCEDURE AND SHUT DOWN THE ENGINE. DECLARED EMERGENCY AND CONTINUED FLIGHT TO MSP WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTION REVEALED METAL IN TAILPIPE. THE AIRCRAFT IS SCHEDULED FOR NR 4 ENGINE REPLACEMENT IN MSP.