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 64 HAS CORROSION AROUND EDGES AND HAS 3EA CRACKS ON SKIN. MAIN CABIN METAL SKIN FLOOR PANEL 64 WAS BLENDED OUT OF LIMITS AROUND I/B FASTENER HOLES ON W/O 2451NO0803 (6C/141) IAW DC-9 SRM 53-01 FIG 1 SH 3. RECEIVED NEW PANEL P/N 9957921-17. LOCATED, DRILLED AND DEBURRED IAW DC-9 SRM 51-10-4.