As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THREE EACH HOLES HAVE CRACK INDICATION IN SEAT TRACK FLANGE AT RIGHT NUMBER 4 SEAT TRACK AT AFT INBOARD HOLE FORWARD OUTBOARD HOLE AND AFT OUTBOARD HOLE COMMON TO SEAT TRACK FLANGE AND SPLICE STRAP. EACH HOLES REAMED, AND HFEC HOLE PROBE INDICATED NO CRACKS. INSTALLED FASTENERS PER ECO J1707AB CARD 3.