As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*L/H FLOOR SEAT TRACK AT LBL9 HAS MULTIPLE AREA OF CORROSION FROM FS409 TO FS409+128. (C-CHECK) RO: 10/22/19. BLENDED FLOOR SEAT TRACKS AT LBL9 FS409.00 TO 409+128 IAW SRM, FOUND TO BE OUT OF LIMITS IAW SRM, REMOVED AND REPLACED SEAT TRACKS LBL9 FS409 TO FS409+128 IAW AMM.