As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE OUTBOAD CHORD OF THE C2 DOOR OPENING LOWER SILL WAS FOUND CORRODED. TO FACILITATE REPLACEMENT OF THE SILL CHORD, THE OUTER CHORD AND WEB OF THE FS 1440 FRAME WERE CUT NEAR THE LOWER SILL AND THE LOWER SECTIONS REMOVED. A NEW SILL CHORD WAS INSTALLED AND THE FRAME WEB AND CHORDS SPLICED BACK IN WITH ALUMINUM REPAIR DOUBLERS PER ER/A 385725-14, REV A.