As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TRANSFERRED FROM AML PAGE 4399798/1 - REF TDMI 909T4951. APU FIRE COWL LEAVING RIVET HEAD MARKS ON APU FIREWALL AND FRAME BOTTOM. SEE NRTC E520460. E WESTFALL 437731. REF LOG PAGE 4030028 ITEM 3. C/A-COMPLETE:C/W PERM REPAIR APU FIREWALL IAW ERS-EM-49MR-074. TDMI RESTORED, SEE AIRCRAFT LOG PAGE 4399798 ITEM 1 FOR BAL. ENTRY.