As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) AFT CABIN FLOOR INTERCOSTAL CONTAINED LEVEL 2 CORROSION ON THESIDE AND UPPER SURFACES. THE INTERCOSTAL DAMAGE WAS LOCATED INZONE 251 BETWEEN FRAMES 41 AND 53 AT BL9 LH. AREA OF CORROSION MEASURED 38.1MM (1.5 IN) IN LENGTH BY 3.175MM (0.125 IN) IN WIDTH AND 0.558MM (0.022 IN) DEPTH.