As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN METAL SKIN FLOOR PANEL NR 20 HAS CORROSION. REMOVED CORROSION ORIG MATL THICKNESS .025 LOST .007 REMAINING .019 FOUND TO BE OUT OF LIMITS IAW DC9 SRM 53-01 FIG 1 SHEET 3. ORDERED & RECEIVED NEW FLOOR PNL LOCATED DRILLED NEW PNL IAWDC9 SRM 51-10-4. TREATED & PRIMED NEW PNL IAW DC9 SRM 51-10-3 INSTALLED 2EA NUTPLATES IAW DC9 SRM 51-30-2.