As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FORWARD CABIN FLOOR SUPPORT BTW FR16 TO FR20 Y-254 UPPER FLANGE HAS CORROSION. SSI 531189. BLENDED CORROSION ON Y-254 FLOOR SUPPORT IAW SRM 51-74-00 L=2.0" W=1.625" D=.079". FOUND TO BE OUT OF LIMITS IAW SRM 53-11-14, FIG 105. R & R FLOOR SUPPORT Y-254 IAW SRM 51-42-11 AND TRM 53-21-01.