As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 2000 FEET AND LEVELING OFF, POWER ADVANCED TO MAINTAIN AIRSPEED, HAD SEVERE NR 3 ENGINE VIBRATION. AIRCRAFT WAS INSPECTED AND FOUND TO BE IN SAFE CONDITION FOR FERRY FLIGHT FROM IAD TO ILN. UPON ARRIVAL AT ILN, THE NR 3 ENGINE WAS REPLACED.