As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING REPAIR OF THE NR 1 NACELLE HORSE COLLAR THE INTERNAL TOP MOUNT FITTING WAS FOUND CRACKED AT THE TOP AFT CORNER FROM THE RADIUS TO THE EDGE OF THE ATTACH FLANGE. THE CRACK ENCIRCLES THE TOP RIVET OF THE AFT ATTACH FLANGE. REMOVED AND REPLACED THE FITTING.