As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENG EXCESSIVE VIBRATION 4.5 N1. NO CHANGE WHEN THROTTLE REDUCED AT CRUISE LEVEL. VIBRATION FELT THROUGH RUDDER PEDALS. MAX RECORDED 5.0(<P>#2 ENG 2 EACH BALANCE WEIGHT REMOVED, ENG #2 VIB TRIM BALANCE PERFORMED IAW AMM 71-00-00 & AMM 72-31-00. RESULT MAX 2.5 UNIT AT N1 75%. MCC WAS INFORMED AND ACCEPTED. </P>)