What was found
DURING LETTER CHECK, FOUND LOWER FUSELAGE SKIN AT FS 720 BETWEEN STR 28L AND 28R WITH CORROSION DAMAGE THAT REQUIRED AN 8.5 INCH X 3 INCH SKIN CUT-OUT. AN EXTERNAL DOUBLER WAS INSTALLED PER DL ERA 301729-14 AD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING LETTER CHECK, FOUND LOWER FUSELAGE SKIN AT FS 720 BETWEEN STR 28L AND 28R WITH CORROSION DAMAGE THAT REQUIRED AN 8.5 INCH X 3 INCH SKIN CUT-OUT. AN EXTERNAL DOUBLER WAS INSTALLED PER DL ERA 301729-14 AD.