As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND MAIN DECK FLOOR STRUCTURE BROKEN AT STA 2054 RBL 75 (REPAIR). CUT AND REMOVE THE DAMAGED SEAT TRACK. MAKE THE EDGES OF THE CUT SMOOTH TO 125 MICROINCHES RA OR BETTER. RECORD THE INITIAL SEAT TRACK PN:65B37086-30 INSTALL THE FLOOR PANELS. REFER TO 747-400 AMM 53-21-02/401.