What was found
DURING C-CHECK INSPECTION, REAR SECTION II, STRINGER #16 RIGHT AT APU FIREWALL. THE SUPPORT ANGLE WAS FOUND TO BE CRACKED. MX REMOVED/REPLACED THE CRACKED ANGLE WITH A FABRICATED PART IAW EMB145 SRM 51-40-02 AND 51-30-01. A/C WAS APPROVED FOR RETURN FOR SERVICE.