As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION, FOUND THE LEFT WEB UNDER CARBON FIBER BEAM TO BE CORRODED AT FRAME 61. THE AIRCRAFT HAS BEEN REMOVED FROM SERVICE. REMOVED AND REPLACED LEFT WEB UNDER CARBON FIBER BEAM AT FRAME 61 IAW SRM 51-40-02. THE AIRCRAFT WAS RETURNED TO SERVICE.