As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE. FOUND CORRODED AREA ON FLOOR PANEL 251SF FROM FR 58 TO FR 62 AND Y-765 TO Y-254 WITH CORROSION AREA MEASURING L=12.5 INCHES, W=8 INCHES. REPLACED FLOOR PANEL, REF 321 SRM 53-02-00-300-011 AND IRM 9701 REV I.