As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 3 ENGINE VIBRATION DURING CRUISE AT 350 FT LOW POSITION A-B 2.8 CAUTION LIGHT ON. SHUTDOWN ENGINE AT 06:35 Z. REMOVE AND REPLACE ALL NR 3 ENGINE C-1 BLADES IAW MM 72-31-01. REMOVED AND REPLACED VIBRATION MONITOR IAW MM 77-31-00. COMPLETED TRIM BALANCE CHECK OIL FILTER AND CHIP DETECTORS ALL SYSTEM CHECK OK. AFTER TRIM BALANCE AIRBORNE VIBRATION MONITOR (AVM) MAXIMUM AT TAKE OFF WAS 1.3 OPERATIONS NORMAL.