As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER SEAT TRACK REMOVAL INSIDE MAIN CABIN BETWEEN STA 1076 AND STA 1180 AT RBL45. FASTENER HOLES OBSERVED WITH COUNTERSUNK KNIFE EDGE. R & R WITH SEAT TRACK FABRICATED IAW DWG 144N5021 SHT.1, REV. A AND INSTALLED IAW DWG 144N5001 SHT 3, REV A . REPAIR IS CLASSIFIED AS MAJOR.