As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON EDGES OF FORWARD NUT CLIP HOLE ON FORWARD SERVICE DOOR LOWER SILL. C-CHECK RO 10/31/2020. REMOVED AND REPLACED FWD SERVICE DOOR LOWER SILL (THRESHOLD BEAM) WITH NEW PART FROM FACTORY. NO SIGNIFICANT CHANGE TO WEIGHT AND BALANCE, REF EMB175 SRM. ACTION ITEMS WITHIN CONTINUATION CARDS FOR ALL WORK ACCOMPLISHED.