As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MX WALKAROUND, MX FOUND A CRACK WHICH IS APPROX 8" LONG AND 4" WIDE ON THE NR 4 ENGINE CORE COWL SKIN. MX FOUND A 4" SECTION OF THE LT CORE COWL L/E RUB STRIP BROKEN OFF. THIS COINCIDES WITH THE 4" SCRATCH MARKINGS ACROSS THE L/E OF THE DAMAGED AREA WHICH IS AFT OF THIS RUB STRIP. THE LENGTH OF THE CRACK AND THE MISSING RUB STRIP EXCEEDS THE SRM LIMITS.