As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE BASE VISIT FOUND THE FLOOR SILL AT FRAME 349.00 TO BE CORRODED ON THE RIGHT SIDE. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPAIRED IAW EO CR-23MR-180. REPAIRED IAW EO CR-23MR-180. THE AIRCRAFT WAS RETURNED TO SERVICE.