As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SAL - MAJOR REPAIR - DURING C1 CHECK FOUND CORROSION ON LOWER SILL FITTING CUTOUT FROM STA 1380 TO STA 1440. NO ALLOWABLE DAMAGE LIMITS LISTED. MAINTENANCE REMOVED AND REPLACED THE LOWER SILL FITTING CUT OUT FROM STA 1380 TO STA 1440 IAW BOEING 757 SRM 51-10-02.