As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TYS, DURING A SCHEDULED INSPECTION THE APU FIREWALL WAS FOUND CRACKED. MAINTENANCE STOP DRILLED THE CRACK, FABRICATED A DOUBLER AND INSTALLED IAW EC5330-01250. THE REPAIR IS SATISFACTORY AND THE AIRCRAFT WILL BE RELEASED UPON COMPLETION OF THE INSPECTION.