What was found
WHILE AIRCRAFT WAS IN HEAVY CHECK MAINTENANCE FOUND THE SPAR 2 RIB 10 ON LEFT WING CRACKED. MAINTENANCE REMOVED AND REPLACED THE LEFT WING SPAR 2 RIB 10 IAW EMB 175 SRM 51-40-02, 51-43-02, 51-43-01, AND 51-21-03. THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.