As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GENERATED WHILE A/C WAS IN HEAVY CHECK, SHEAR PLATE BETWEEN FR 87 AND FR 88 BETWEEN LT SEAT TRACK BEAM AND RT SEAT TRACK BEAM HAS CORROSION. MAINTENANCE REMOVED AND REPLACED CENTER SEAT PLATE IAW EMB SRM 51-42-01. A/C IS STILL CURRENTLY IN HEAVY CHECK.