As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION LEVEL 2 ON GUTTER SUPPORT ON BOX BEAMS AT STA 1669 OF LH LOWER SILL PAX CABIN. GUTTER SUPPORT ON BOX BEAMS AT STA 1669 OF LH LOWER SILL PAX CABIN WAS REPLACED PER B757-300 SRM 51-40-02-0G. PAR 7.D. AND PAR 4. (LP 1705202 - AIRCRAFT WAS GROUNDED)