As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE LP VIBRATION WENT AMBER AT 4.0 AND 34000FT. COMPLIED WITH N1 VIBRATION WORKSCOPE ON RT ENGINE IAW MM 72-00-00 SPECIAL PROCEDURE 097. MAX LP VIBRATION LEVEL NOW 1.5 AU. DURING ACCOMPLISHEMENT OF N1 VIBRATION WORKSCOPE ON RT ENGINE, FOUND BASE COAT MISSING FROM ID OF FAN BLADE RETAINING PIN HOLES ON NUMEROUS BLADES. PERFORMED REPLACEMENT OF ENTIRE RT ENGINE FAN BLADE SET IAW MM 72-00-00 SPECIAL PROCEDURE 094.