As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PERIODIC CHECK, THE KEEL BEAM LOWER CHORD WAS FOUND CORRODED AT FS 1466, LBL 7. CORROSION IN ON THE UPPER HORIZONTAL FLANGE AND IS 0.152 INCHES DEEP. CHORD IS MADE FROM BAC1520-1680 7075-T6511 ALUMINUM EXTRUSION. MADE REPAIR PER EA 66-96581.