As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE C1 DOOR OPENING LOWER SILL WAS CORRODED, REQUIRING REPLACEMENT OF THE SILL OUTER CHORD. TO FACILITATE INSTALLATION OF A NEW CHORD, THE FS 620 CLOSING FRAME OUTER CHORD AND WEB WERE CUT BETWEEN STRINGERS 25R & 26R AND A SECTION TEMPORARILY REMOVED FOR ACCESS. THE SECTIONS WERE REINSTALLED WITH ALUMINUM ANGLE CHORD SPLICES AND AN ALUMINUM DOUBLER WEB SPLICE INSTALLED PER ER/A 380263-14.