As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHV - DURING C-CHECK, THE APU FIREWALL WAS FOUND TO CRACKED AT THE UPPER LEFT APU MOUNT. MAINTENANCE REMOVED THE DAMAGED AREA AND INSTALLED A PATCH REPAIR IAW EMB 145 SRM 53-32-13, FIG 202. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.