As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION STA 1420- 1440 BETWEEN 530 & 529R. STARTED REMOVING INTERCOSTAL ASSY. REMOVED WEB FROM STA 1420 TO 1440 BETWEEN S29-30R. NEW WEB FABBED ON REPAIR ORDER. STARTED TO DRILL NEW INTERCOSTAL/WEB. TRIMMED TO FIT PER SAMPLE & DRAWING. ASSEMBLED INTERCOSTAL INSTALLED PER. B757-300 SRM. (1047150)