As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AC WAS IN FOR HEAVY CHECK, LEVEL TWO CORROSION WAS FOUND ON RT FLOOR SEAT TRACK IN TWO PLACES BETWEEN FR 85 AND FR 86. MAINTENANCE REMOVED AND REPLACED UPPER SHEET ON SEAT TRACK PER THE EMB SRM. AC STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.