As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CARGO FLOOR TRACK CORRODED ON UPPER AND LOWER SURFACE MOSTLY AROUND NUT PLATE HOLES RBL 13 TO RBL 14 STA 802 TO STA 846. REMOVED DAMAGED CARGO TRACK SECTION STA 767 TO STA 887, LOCATED, FABRICATED A REPLACEMENT TRACK AND SPLICE DRILLED AND INSTALLED IAW B737 900 SRM 53 00 53 REP 4.