As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MTC REPORTED A SMALL AREA OF CORROSION ON THE FUSELAGE SKIN AT STA 1582 AND S-25L JUST AFT OF THE LAVATORY VENT. THE CORROSION WAS FOUND ONLY ON THE FORWARD SKIN PANEL AT THE STA 1582 BUTT SPLICE. THIS ERA AUTHORIZED MTC TO CLEAN UP THE CORROSION AND INSTALL A REPAIR DOUBLER.