What was found
SHV-DURING C-CHECK MAINTENANCE FOUND AFT LOWER SIDE OF APU FIREWALL RIVET HEAD WITH DAMAGE. MAINTENANCE REPAIRED APU LOWER FIREWALL SKIN DAMAGE I/A/W EC 5330-01521. AIRCRAFT WAS APPROVED TO RETURN TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
SHV-DURING C-CHECK MAINTENANCE FOUND AFT LOWER SIDE OF APU FIREWALL RIVET HEAD WITH DAMAGE. MAINTENANCE REPAIRED APU LOWER FIREWALL SKIN DAMAGE I/A/W EC 5330-01521. AIRCRAFT WAS APPROVED TO RETURN TO SERVICE.