As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-04 CHECK EXFOLIATION CORROSION WAS FOUND ON UPPER AND LOWER SURFACE OF Y1292 FLOORBEAM BETWEEN FR 65-66. MAINTENANCE FOUND CORROSION TO BE OUT OF LIMITS. REMOVED CORRODED Y1292 FLOORBEAM BETWEEN FR 65-66; FABRICATED A NEW REPLACEMENT FLOORBEAM; INSTALLED REPAIR PART IAW A320 SRM 51-49-00, PG 5-6 TABLE 1.