As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING BC4 CHECK DISCOVERED LEVEL 2 GALVANIC CORROSION ON FLOOR SILL BEAM AT FR 66, BL 60R AND Y-1732. CORROSION WAS REMOVED AND REWORK WAS FOUND TO BE OUT OF SRM LIMITS. MAINTENANCE REMOVED AND INSTALLED NEW FLOOR SILL BEAM FROM FR 66 TO FR 68 AT BL 60R AND Y-1732 IAW AIRBUS 319 SRM 51-72-11.