As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE C-CHECK INSPECTION, CORROSION WAS DETECTED ON THE LOWER FORWARD CARGO COMPARTMENT FRAME CLOSE TO AFT DOOR CUT OUT OF FUSELAGE STATION 520 LONGERON 27R. REPAIR ACCOMPLISHED, REMOVAL OF DAMAGED FRAME SECTION, FABRICATION AND INSTALLATION OF REPAIR FILLER AND REPAIR CHANNELS IN ACCORDANCE WITH THE DOUGLAS STRUCTURAL REPAIR MANUAL.