As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND LEFT, REAR, VERTICAL FIN ATTACH FITTING BROKEN ON OUTBOARD LEG. THIS MDR IS RELATED TO AN EARLIER MDR REPORT ON A BROKEN HORIZONTAL/VERTICAL FIN ATTACH FITTING AND CRACKED SPAR/REINFORCEMENT STRUCTURE. AIRPLANE IS USED IN A FLIGHT SCHOOL