As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE SKIN WAS FOUND CORRODED BETWEEN FS 480 AND 500 AT STRINGER 28R. THE CORROSION WAS CUTOUT RESULTING IN A 16.75 LONG X 3.25 WIDE CUTOUT. THE CUTOUT WAS REPAIRED WITH AN EXTERNAL ALUMINUM DOUBLER, INSTALLED PER PROCEDURES OUTLINED IN B727 SRM 53-30-3, FIG 3 AND DOCUMENTED PER ER/A 365500-14, REV B .