As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT WET AREA CORROSION LT FLOOR BEAM CORRODED AROUND FASTENER, AS MARKED AT FR 87. C-CHECK RO 10/31/2020. REMOVED AND REPLACED AFT WET AREA LT FLOOR BEAM WITH NEW PART FROM FACTORY. NO SIGNIFICANT CHANGE TO WEIGHT AND BALANCE, REF EMB175 SRM.