As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE INSPECTING REPAIR ON THE AFT CARGO DOOR 3RD INTERCOSTAL WEB ANGLE AND LOWER EDGE BEAM FOUND MORE CORROSION ON THE INSIDE OF THE AREA, THE NEW CORROSION IS OUTBOARD OF THE NEWLY REPAIR AREA. CORRECTIVE ACTION: REMOVED CORROSION AND FOUND TO BE OUT OF LIMITS. REMOVED AND REPLACED INTERCOSTAL IAW B757-200 SRM 52-30-02.