As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE PURPOSE OF THIS EO IS TO RECORD A MAJOR REPAIR. DURING C CHECK INSPECTION BEING PERFORMED AT HKG; DAMAGE WAS FOUND TO THE MAIN DECK BS 1800 LBL 11.0 SEAT TRACK CRACK (REFERENCE FIGURE 1). PERMANENT REPAIR PERFORMED IN ACCORDANCE WITH THE 747-400 SRM 53-00-52 FIGURE 201, REPAIR 12.