As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE BASE VISIT THE RIGHT FRAME 280 BULKHEAD LOWER WEB WAS FOUND TO BE CORRODED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE RIGHT FRAME 280 LOWER WEB IAW EO CR-53MR-174. THE AIRCRAFT WAS RETURNED TO SERVICE.