As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LH PRESSURE FLOOR SILL CORRODED AROUND NUTPLATES BETWEEN FS473.15 AND FS513 (C-CHECK RO 10/07/2021) REMOVED CORROSION FROM LH PRESSURE FLOOR SILL FROM FS 449.85 TO FS 513 IAW REO 601R-53-41-666 REV C DATED 11/06/2012. COMPLETED TASK CARD 51-900-1003-SKY AND ATTACHED COMPLETED FORM 337. NO WEIGHT CHANGE NOTED