As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ENGINE ESN TREND DATA SHOWS A SUDDEN INCREASE IN LOW PRESSURE ROTOR VIBRATION LEVELS. GROUNDED - YES. DURING #2 ENGINE FAN LUBE FOUND PLATFORMS AND SPACERS WORN CAUSING FAN BLADES TO BE LOOSE. NO EXCESS LUBE FOUND. REPLACED ALL 24 PLATFORMS AND SPACERS. VIBE SURVEY TEST 7 TO BE PERFORMED ON T/C 78472010.