As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING TC 78472002, FOUND ALL FAN BLADES WITH MISSING OR CHIPPED CU-NI-IN COATING OUTSIDE BEYOND AREA X IN CONTACT AREA. ACFT GROUNDED. REMOVED THE NR 1 ENGINE FAN BLADE SET. INSTALLED MAPPED REPLACEMENT BLADE SET IAW AMM 72-21-02-400-801-F00.