As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCI - HEAVY CORROSION ON INBOARD AFT CORNER OF RIGHT HAND PACK AREA ON KEEL BEAM AT STATION 955. INSTALLED NET FIT FILLER IN REWORKED AREA. REINSTALLED FASTENERS PER STRUCTURAL REPAIR MANUAL 53-50-12 AND MRB 767 2874 DATED 06 SEP 2006.