As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A SCID INSPECTION 53-20, CORROSION WAS FOUND ON FLOORBEAM AT STA 681.0 RT SIDE AT BELTFRAME. AN AREA OF APPROX 3 INCHES X 5 INCHES ON THIS FLOORBEAM WAS FOUND CORRODED AT BELTFRAME ATTACH POINT AROUND RIVETS. THE CORROSION HAD PROGRESSED THROUGH 50 PERCENT OF THE BEAM`S THICKNESS IN ONE AREA. REPAIR IN PROGRESS AT THIS TIME.