As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C/W OF AD 72 07-09, FOUND 4 CRACKS IN BULKHEAD P/N 1212859-1 AND 3 CRACKS IN BULKHEAD P/N 1212409-6. THE REST OF THE FIN STRUCTURE WAS DYE CHCKED AND INSPECTED AND NO FURTHER CRACKS WERE FOUND. ONE FORWARD VERTICAL FIN BOLT HAD SHOWN SIGNS OF LOOSENING. THIS AIRPLANE HAD INSPECTION 1,000 HRS PREVIOUSLY.