As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:IN BELLY SKIN AT STA 700 TO STA.780 AT LT SIDE ABOUT 24 INCHES FROM BOTTOM CENTER OF SKIN HAS 4 INCH CRACK WITH SEVERE CORROSION. CUT OUT DAMAGE (CORROSION) AS PER SRM 51-10. VERIFIED DAMAGE REMOVED INTERIM REPAIR COMPLETED AS PER EO B747-5330-15107A. NO REINSPECTIONS, PERMANENT REPAIR BY "C" CHECK.