As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING NR 2 ENGINE FAN BLADE LUBRICATION. FOUND NR 1 FAN BLADE MISSING CU NI IN COATING ON CONCAVE SIDE, AFT END IS BEYOND LIMITS. BLADE NR 13 TO BE CHANGED AS A PAIR WITH BLADE NR 1. ACFT GROUNDED. REPLACED THE 1 & 13 FAN BLADES IAW T/C 78472002.