As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN FLOOR SUPPORT AT BS 665-750 HAS SURFACE CORROSION. REMOVED TO BE OUT OF LIMITS AT BS 665-750, LBL 64 PER SRM 51-40-02/51-40-05. CORROSION REWORK DIMENSIONS ARE AS FOLLOWS: L=7 INCH, W=2 INCH, D=.040 INCH. THIS REPAIR IS CLASSIFIED AS A CAT "A" MAJOR REPAIR.