As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING H CHECK AT TECHOPS MX (QRO), WHILE ACCOMPLISHMENT OF TASK CARD 5300-2422, THE FUSELAGE SKIN WAS FOUND CORRODED AT LOWER FORWARD CORNER OF CUT OUT LAVATORY SERVICE ACCESS DOOR BETWEEN BSTA 847 AND BSTA 867 AND BETWEEN S-23L AND S-25L. MAINTENANCE REPAIRED DAMAGE PER ERA 629263-14AD.