As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1079 EN ROUTE. WHILE IN CRUISE, RIGHT ENGINE VIBRATION HIGH, READS 2.8 WITH NO EICAS MSG. ENG INDICATIONS WERE NORMAL. VIBRATION RETURNED BELOW 2.5 WITH THRUST LEVER RETARDED. MAINTENANCE ACCOMPLISHED SATISFACTORY ALTERNATE FAN TRIM BALANCE PROCEDURE. NORMAL VIBRATION LEVELS RESTORED.