As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TUL - SKIN BULGED AT AFT EDGE OF THE AFT LAV SERVICE PANEL AT STATION 1180, STRINGER 20L TO 21L (FUSELAGE SKIN). REMOVED CORRODED SECTION OF SKIN AND INNER DOUBLER (AREA PREVIOUSLY WORKED). INSTALLED NEW INNER DOUBLER AND REPAIR DOUBLER WITH FILLER PER SRM 53-30-3 FIG 3. (M)