As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A SCHEDULED MAINTENANCE CHECK, A CRACK WAS LOCATED ON THE VERTICAL KEEL BEAM CHORD AT BS 870, APPROXIMATE RBL 3.5. DURING REMOVAL AND REPLACEMENT OF THE CRACKED CHORD A KEEL BEAM SUPPORT ANGLE WAS FOUND CRACKED COMPLETELY THROUGH BOTH FLANGES AND A CRACK WAS DISCOVERED ON THE WEB. THE SUPPORT ANGLE WAS REMOVED AND REPLACED AND AN SRM REPAIR WAS ACCOMPLISHED ON THE WEB.