As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION. AFT CARGO FLOOR SUPPORT ABOVE STR 25R FROM BS747 TO BS767 HAS CORROSION AROUND FASTENER HOLES ON TOP SURFACE AND UNDERSIDE ; PLUS BARE METAL AT ANCHOR NUTS. WL 155.5. / REMOVED AND REPLACED FLOOR SUPPORT P/N 146A7505-8 ABOVE STR 25R FROM 747 TO 767 AT AFT CARGO COMP. PER REF. B-737 SRM 51-40-02-0G-0.