As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THREE AREAS OF CORROSION ON KEEL BEAM LOWER CHORD (TOP AND BOTTOM) APPROXIMATE STATION 956-970, LBL9 ACCESSED BETWEEN MAIN LANDING GEAR DOORS. REPAIRED LOWER KEEL BEAM AT STATION 956-970 LBL9 IN ACCORDANCE REA-B653-62220-MR. ACFT GROUNDED.