As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON PASSENGER CABIN SEAT TRACK BS 540-BS 727B LBL 45 WL 208. REMOVED AND REPLACE PASSENGER CABIN SEAT TRACK BS 540-727B LBL 45 WL 208 DUE TO CORROSION. DEEPEST BLEND OUT 2.4' X .4' X .4' X .022' FOUND TO BE OUT OF LIMINTS, IAW SRM 52-00-52-1A-1 56693U 06DEC2020.