What was found
MAJOR REPAIR - RIB 52 ANGLE AT WING STUB LT SIDE CRACKED. REMOVED RIB 52 ANDLE AT WING STUB IAW EMB SRM 51-40-02. MATCH DRILLED NEW ANGLE IAW EMB 170 SRM 51-41-01, 51-42-01, AND 51-43-03. INSTALLED RIB 52 ANGLE IAW EMB SRM 51-41-01, 51-42-01, AND 51-43-03.