As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE TOL TO DEN, THE NR 3 ENGINE WAS SHUT DOWN DUE TO FLUCTUATING FUEL FLOW AND SUBSEQUENT FLUCTUATING N1. MAINTENANCE INSPECTED THE ENGINE AND FOUND THE N1 AND N2 SPOOLS DRAGGING TOGETHER. THE ENGINE WAS REMOVED AND REPLACED. PRELIMINARY INDICATIONS ARE A FAILURE OF THE NR 4 BEARING. (M)