As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN FLOOR PNL 26 HAS CORROSION ON UPPER SURFACE OF DOUBLER REPAIR AND ON THE BOTTOM SIDE OF PNL, PNL IS OFF AC PART. REMOVED CORRODED DOUBLER ON CABIN FLOOR PNL 26 IAW DC9 SRM 51-30-2 PG 1. FABRICATED AND INSTALLED DOUBLER ON CABIN FLOOR PANEL 26.