As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS IN HEAVY CHECK MAINTENANCE FOUND THE RIGHT FLOOR PANEL SUPPORT AFT OF R2 DOOR CORRODED. MAINTENANCE REMOVED AND REPLACED THE PANEL SUPPORT AFT OF R2 DOOR IAW EMB 170 SRM 51-42-01, AND 51-43-03. THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.