As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON C1 B/B DOOR THRESHOLD ATTACH ANGLE. REMOVED CARGO LOADER BELTS, SIDE SUPPORT GUIDES AND FWD SUPPORT, SECTION IAW AMM 25-51 FOR MX ACCESS REMOVED CENTER FLOOR PANEL AND FIXED FLOOR PANEL - REF DWG 143N5366. DRILLED UP NEW REPLACEMENT PANEL AND NUTPLATES REF BAC DWG 143N5366. INSTALLING FIXED FLOOR PANEL. REF BAC DWG 143N5366, LOADER BELTS, SIDE SUPPORT GUIDES AND FWD SUPPORT SECTION REF NR 11.