As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON VERTICAL WEB UNDERNEATH THRESHOLD FITTING IN AFT CARGO DOOR CUTOUT THRESHOLD BS 1403, RBL 26. MAJOR REPAIR ACCOMPLISHED REMOVED, FABRICATED AND INSTALLED VERTICA L WEB UNDERNEATH THRESHOLD FITTING IN AFT CARGO DOOR CUTOUT THRESHOLD BS 1403 RBL 26 IAW BOEING DRAWING 146N8522 AND B757-200 SRM 51-40-02 PARA 7D FIGURE 12.