As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VIBRATION ANOMALY ON NR 2 ENGINE, ALL PARAMETERS ARE WITHIN LIMITS. ACCOMPLISHED TSR WEIGHTS ON ENGINE. MATCHED THE AAVM LOC. 24-P12 & LOC 26-P12 PERFORMED ONE PLANE BALANCE & CHANGED CONFIG TO NEW SOLUTION - LOC 24 FROM P12 TO P14, 26 FROM P12 TO P14, LOC 29 FROM P14 TO P12, & 34 FROM P14 TO P12. VIBRATION LEVELS RETURNING TO NORMAL AFTER INCORPORATION OF BALANCE SOLUTION.