As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HIDDEN DISCREPANCY IN REF NRC S/N 00733 DURING LOWER TCAS ANTENNA REMOVAL CORROSION ON EXTERNAL FUSELAGE SKIN WAS FOUND (SETTLEMENT ON ANTENNA AREA). CORRECTIVE ACTION: CORROSION ON EXTERNAL FUSELAGE SKIN (SETTLEMENT ON ANTENNA AREA) WAS REPAIRED PER REO 670-53-21-1250 REV B.