As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AFT LAVATORY VACUUM VENT OUTLET APPEARS TO HAVE CORROSION. MAINTENANCE FERRY TO TLE FOR REPAIR (SEE AALA202509272720) CORROSION ON LOWER FUSELAGE SKIN AROUND AFT LAVATORY VACUUM VENT LOCATED AT BS 917 FROM S21L AND S22L. ACCOMPLISHED TRIPLER REPAIR PER SRM 53-70-01-2R REPAIR AND EA 368349.