As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO DOOR LOWER EDGE RIB ASSY IS CORRODED APPROX 29" AFT OF THE FWD EDGE FWD AND AFT SIDES. REMOVED AND REPLACED 146N6603-183 WEB FLANGE IAW BAC DWG 146N6603 REV K AND B757 SRM 51-40-02, REAPPLIED LEVELING COMPOUND IAW B757 AMM 51-40-00-2.