As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) IN CRUISE, THE FLIGHT EXPERIENCED A NR 1 ENGINE VIBRATION. THE ENGINE CONTINUED OPERATING NORMALLY BUT WITH VIBRATION. THE FLIGHT DIVERTED TO FAIRBANKS, ALASKA. AN ENGINE HAS BEEN SCHEDULED AND TOOLS, PARTS AND MANPOWER ARE CURRENTLY BEING SHIPPED TO ALASKA. ACFT IS OUT OF SERVICE. \ETQ INVESTIGATION NR 2917 INITIATED.