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 UPPER PYLON RIB FRAME 3 SUPPORT CORRODED. MAINTENANCE REMOVED AND REPLACED SUPPORT RIB FRAME 3 IAW EMB 170 SRM 51-40-02, 51-41-02,AND EMB 170 AMM 54-50-21. THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.