As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON LOWER SURFACE OF FLOOR SUPPORT RAIL BS 1540 RBL 3 AT NUTPLATE LOCATION. REMOVED DAMAGED SECTION OF FLOOR SUPPORT RAIL BS 1540 RBL3. FABRICATED REPAIR PARTS, ALODINED, PRIMED, AND INSTALLED REPAIR PARTS WET WITH SEALANT. DONE IAW SRM 53-60-53D FIG 206.