As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FUSELAGE STRINGER AND SKIN AT S-29R WERE FOUND BADLY CORRODED BETWEEN FS 720A+10 AND 720C+10. THE SKIN DAMAGE WAS CUTOUT AND A DOUBLER AND TRIPLER INSTALLED. THE DAMAGED AREA OF STIFFENER WAS REMOVED AND A NEW SECTION SPLICED IN. THE REPAIR WAS ACCOMPLISHED PER ER/A 364137-14, REV A.