As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO COMPARTMENT FLOOR SUPPORT STRINGER STA 1468 TO 1471 RBL 3 HAS CORROSION ON THE UPPER AND LOWER SURFACES. REMOVED AND REPLACED FLOOR SUPPORT STRINGER FROM AFT CARGO COMPARTMENT STA 1440-1500, RBL 3 IAW SRM 51-40-02 PG 4, SRM 53-00-53 FIG 101 AND DWG 146N5390 REV C. INSTALLED NUTPLATES IAW B757-200 SRM 51-40-02 STEP 5.