As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER DOOR MIDDLE INTERCOSTAL AT DD4 CORRODED. (C-CHECK) RO 7/10/2020 REMOVED THE CORROSION FROM THE PAX DOOR INTERCOSTAL MID DD4 REF SRM. BLENDED AREA FOUND TO BE OUT OF LIMITS REF SRM. WET INSTALLED AND FILLET SEALED THE PAX DOOR MID INTERCOSTAL DD4 REF SRM AND DRAWING. PRESSURE CHECK GOOD. SEE CONTINUATION CARD FOR DETAILS.