As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE TREND DATA SHOWS AN INCREASE IN LOW PRESSURE ROTOR VIBRATION LEVELS. DATA SCATTER INDICATES FAN LUBE REQUIRED. GROUNDED-YES. ACCOMPLISHED FAN LUBE T/C 78472010 ON NR 2 ENGINE. REMOVED AND REPLACED 2 FAN BLADE SPACERS NR 21, 23. DUE TO ELASTOMER LOOSE. NO OTHER DEFECTS NOTED.