As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT MAIN CABIN FWD FLOOR SUPPORT FR16 TO FR20 +Y1292 HAS SURFACE CORROSION. BLENDED AREA IAW SRM 51-74-00. CHECKED LIMITS L=2.0" W=1.0" D=0.05". FOUND TO BE OUT OF LIMITS IAW SRM 53-11-15. R & R FLOOR SUPPORT IAW SRM 51-42-11 AND TRM 53-21-01.