As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING FAN BLADE LUBE ON NR 2 ENG. T/C 78472010, FOUND BLADE NR 12 WITH MISSING CU-NI-IN COATING BEYOND LIMITS. GROUNDED - YES. NR 2 ENG S/N 658831, FAN BLADES NR 12 AND NR 24 REPLACED DURING ACCOMPLISHMENT OF T/C 78472010 ON W/O # 443954.