As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
KEEL BEAM STIFFENER HAS INTERGRANULAR CORROSION AT STA 910, RBL 7.0 INCH. CORROSION ON KEEL BEAM STIFFENER AT STA 910, RBL7.0 FOUND EXCEEDED SRM ALLOWABLE DAMAGE LIMITS. REMOVED AND REPLACED STIFFENER IAW SRM 51-40-02 REV.97. REPAIR IS CLASSIFIED AS MINOR IAW GMM 6-2-100 CRITERIA.