As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE STRUCTURE INSPECTION, WE FOUND THE FUSELAGE SKIN WITH HEAVY CORROSION AT THE INTERNAL SURFACE, BETWEEN FR73 AND 74 AND BETWEEN STRINGER 29L AND 28R JUST AT THE SKIN JUNCTION.THE DAMAGE WAS REPAIRED INSTALLING AN EXTERNAL REPAIR DOUBLER AS PER E.O. # COO-EO-2021-13775 R00, ETD2021-190-029469 REV:/ AND APPROVED ON ANAC FORM F-200 PROVIDED BY EMB