As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION FLOOR BEAM -Y254 LOCATED FR12 TO FR24 AT FWD GALLEY AREA (CP CP RELATED REFER TO THE MPD TASK 531189-01) (REF NR 2021-397154); ACCOMPLISHED REPAIR OF CORROSION FOUND ON THE NOSE FWD FUSELAGE SEAT TRACK UPPER FLANGE AT FR18 AND -Y254 IN ACCORDANCE WITH AEROMAN EA 53-0463-21 COVER AND PART 1 AND 2 AND EC A21-1000-01. TOOL USED / CALIPER P/N: 2340A11 S/N: 817120081 DUE DATE JAN-11-2. CLASSIFIED AS MAJOR REPAIR.