As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CURRENT HMV, CORROSION WAS FOUND ON THE INTERIOR SKIN PANEL JUST BELOW THE S-25L LAP FROM BODY STATION 1851 TO 1854 LEFT. THE DAMAGE WAS OUTSIDE OF THE SRM LIMITS. THE DAMAGE WAS TRIMMED OUT AND A BOEING APPROVED REPAIR WAS INSTALLED PER 460838-14.