As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON REMOVAL OF AFT CARGO LT TRANSITION PANEL FOUND INTERCOSTAL WITH CORROSION BETWEEN STA 1480/1500 AND S-26L/S-27L AT UPPER MATING SURFACE. FABRICATED NEW ANGLE AND INSTALLED NEW ANGLE REPLACEMENT AT AFT CARGO COMPT STA 1480 TO 1500 S26L TO S27L IAW SRM 51-40-02. CORRODED AREA L=4.0 W=1.0'' D=0.050''.