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 CRACK LIKE INDICATIONS IN A2 HOLE ON RIGHT WING. MAINTENANCE REAMED A2 HOLE TO .362" IAW EMB 175 SRM 51-40-02, AND SB 170-57-0053 TO REMOVE CRACK LIKE INDICATION. THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.