As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RCB FLOOR PANEL # WSP0785-502 HAS CORROSION AT STA 480 BETWEEN X=27.500 & X=36.000 MARK MM 003. REMOVED AND REPLACED FLOOR PANEL P/N WSP0785-502 PER DAC DWG WSP0785, DWG SP11530078, AND PER MD11 SRM CHAPTER 51 GUIDELINES. USE ORIGINAL PART AS SAMPLE IN ACCORDANCE WITH UPS GMM 09-08 REV 6.