What was found
AIRCRAFT TACK TIME 2951.81. ENG FAILURE RESULTED IN OFF AIRPORT LANDING CAUSING DAMAGE TO AIRCRAFT OF UNREPAIRABLE AMOUNT. FAILURE CAUSED BY DUAL MAGNETO FALLING OFF OF ACCESSORY CASE AND DRIVE GEAR DISENGAGING FROM ENG. EXAM SHOWS LOWER MAG HOLD DOWN STUD INTACT BUT NUT, WASHER, LOCKWASHER, AND HOLD DOWN CLIP MISSING. UPPER MAG HOLD DOWN STUD INTACT WITH NUT, WASHER, LOCKWASHER, AND CLIP INSTALLED BUT SIGNIFICANT SECTION OF MAG HOUSING HOLD DOWN FLANGE BROKEN OFF.