As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE VIBRATION WAS 5.3 ON T/O. PERFORMED FAN TRIM BALANCE IAW CARD F5M71303 AND GROUND CARD F5M71306. VIBRATION LEVELS LESS THAN 1 UNIT. CURRENT HISTORY: A/C HAD VIBRATION 2.6-2.9 MILS ON 14 MAR 00 WITHIN LIMITS. RECOMMENDATION: MONITOR.