As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RH BODY GEAR W/W FIXED PANEL INNER SURFACE, JUST BELOW APU FIRE SHUT OFF MODULE. FOUND SURFACE CORROSION. RH BODY GEAR W/W FIXED PANEL INNER SURFACE JUST BELOW APU FIRE SHUT OFF MODULE SURFACE CORROSION FOUND OUT OF LIMITS AS PER B747-400F SRM 53-00-71-1A-1 REV. 103 AND FABRICATED NEW PANEL (65B10925-146) AS PER SMAL REQUEST NO: 271120012 AND BOEING DRAWING 65B10925 SHEET 17 REV.F. NO FURTHER DEFECTS NOTED.