As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING M-CHECK FOUND MAIN PASSENGER CABIN CORROSION IN SEVERAL PLACES ON FLOOR PANEL 63. CUT OUT DAMAGED AREA 1.5 SQ IN NDT VERIFIED DAMAGE REMOVAL IAW NDT SPM 06-10-01. FABRICATED & INSTALLED FILLER & DOUBLER FROM7075-T6 .020 THICK PO 1022528 IAW DC9 SRM 53-01 FIG 4.