As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DRUING FLIGHT ENGINE NR 1 EXPERIENCED A SUDDEN VIBS INCREASE TO 3.5 UNITS ON BOTH CHANNELS A & B, WARNING LIGHTS CAME ON, ENGINE SHUT DOWN WAS ACCOMPLISHED.MCD CHECKS WAS C/O NOT DAMAGED, ENGINE BORESCOPE WAS C/O NO DAMAGE FOUND. FAN BLADES REMOVED CLEANED AND RE-INSTALLED, FAN CLAPPERS LUB.FAN TRIM BALANCE TO BE ACCOMPLISHED.