As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON REMOVAL OF THE AIRFRAME VERTICAL FIN ASSY, THE UPPER VERTICAL FIN FWD ATTACH STEEL FITTING SEPARATED FROM THE UPPER VERTICAL FIN. INSP REVEALED THAT ALL RIVETS ATTACHING THE FITTING TO THE FIN WERE CORRODED BEYOND RETENTION. ALSO FOUND THE SHIN OF THE FIN WAS CRACKED APPROX 95 PERCENT FROM THE RT SIDE AROUND THE TOP TO THE LT SIDE, ENDING AT THE SECOND RIVET UP OF THE FWD RIVETS OF THE SKIN.