As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING T/C 78472010 NOTED THAT FAN BLADE #4 HAS BLADE TIP CURL. REF AMM 72-21-02-200-801-F00 2,K.1.J BLADE TIP CURL IS OUT OF LIMITS. GROUNDED - YES. REMOVED AND REPLACED #4 AND #16 FAN BLADES REF T/C 78472010 SUBTASK 839-043.