As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A-CHECK INSPECTION, THE APU FIREWALL WAS FOUND TO BE CRACKED IN 2 LOCATIONS AS VIEWED FROM INSIDE THE AFT RIGGING BAY. MX INSPECTED THE FIREWALL AND FOUND THE REPAIR AT THE 3 O'CLOCK POSITION TO HAVE BEEN PREVIOUSLY REPAIRED WITH A DOUBLER, AND PERFORMED A DOUBLER REPAIR TO THE SECOND CRACK AT THE ONE O'CLOCK POSITION. THE ACFT WAS APPROVED FOR RETURN TO SERVICE ON 11/21/12.