As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLOORBOARD A-4 HAS SEVERAL AREAS OF CORROSION ON TOP SURFACE AND CORROSION AROUND SOME OF THE FASTENER HOLES AND BOTTOM HAT CHANNELS HAVE MINOR CHAFES AND CORROSION. REMOVED CORROSION AND CHAFING. REPAIRED FLOOR PANEL IAW DC9 SRM 51-30-2 AND DRW 9915597 & SRM 53-05 FIG 1.