As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: CORROSION IN SEAT TRACK LOCATED Y= - 270.0 AND BETWEEN FR 84/85 AT CF III PASSENGER CABIN FLOOR STRUCTURE; ALL WORK ACCOMPLISHED ON TOMEX NRC 000110, SEAT TRACK LOCATED BETWEEN FR 84/85 AT CF III PASSENGER CABIN FLOOR STRUCTURE WAS REPAIRED PER EMB-190 SRM 53-23-10 REPAIR 54. P. (CONSIDERED AS A MAJOR REPAIR)