As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BS 720 TO 740, RBL 20 INTERCOSTAL CORRODED. INTERCOSTAL WEB FOUND BADLY CORRODED BEYOND SRM DAMAGE LIMITS. WEB BETWEEN BS 720 AND BS 740. REMOVED AND REPLACED IAW SRM 51-40-02 REV.97. REPAIR IS CLASSIFIED AS MINOR IAW GMM 6-2-100 CRITERIA.