As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 4 NACELLE REAR ENGINE MOUNT THRUST LINK, CRACK INDICATION REVEALED AT FWD END LUG UPPER EXIT LIMIT. NR 4 ENG REAR MOUNT THRUST LINK REPLACED PER EO B747-7120-22596-A WORK CARRIED OUT ON TASK CARD APPENDIX-I NR 4 ENG REMOVED AND INSTALLED (FOR ACCESS) AS PER UPS TASK CARD TC 5000.