As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON INSP OF VERTICAL FIN FOUND ONE SMOKING RIVET ATTACHED TO THE SPAR OF THE LOWER VERTICAL FIN. FROM THERE, FOUND THE CRACK ON THE CENTRAL SPAR. REMOVED FIN AND SENT IT OUT FOR REPAIR. THEY INSTALLED A NEW SPAR PN 350A14-1115-22. THE FIN WAS REINSTALLED AFTER REPAIR.