As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LT MAIN STRUT FAILED DURING TAKEOFF ROLL RESULTING IN THE GEAR COLLAPSING. ON INSPECTION OF THE FAILED STRUT, THERE APPEARED TO BE AN EXISTING CRACK PRIOR TO THE FAILURE STARTING FROM THE BOLT HOLE THAT ATTACHES THE STRUT TO THE WHEEL HOUSING. IT SHOULD BE NOTED THAT THIS ACFT IS USED FOR FLIGHT TRAINING AND PROBABLY HAS EXPERIENCED HARD LANDINGS ON MANY OCCASIONS.