As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN REPORTED THAT DURING CLIMB, THE LT ENG VIBRATION REACHED 3.1 UNITS & DURING CRUISE THE VIBRATION WAS STABILIZED IN 4.1 UNITS. ACFT WAS SENT TO THE HANGAR & A BORESCOPE INSPECTION IAW AMM 72-00-00-200-808-F00, TRIM BALANCE IAW AMM 71-00-00 TASK 71-00-00-700-847-G01 & LUBRICATION OF THE FAN ROTOR BLADE OF THE LT ENG IAW AMM 72-21-02 & VIBRATION TEST NR 7 WAS PERFORMED IAW AMM 72-00-00, BEING WITHIN LIMITS.