As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A CRACK HAD FORMED, PREVIOUS TO INCIDENT, AROUND THE BUSHING BOSS ON THE INBOARD END OF THE MOUNT PORTION OF THE UPPER MAIN GEAR LEG. THE RESULT WAS THAT THE MAIN GEAR COLLAPSED IN THE OUTBOARD DIRECTION WHILE TURNING AIRCRAFT AROUND AT THE END OF THE RUNWAY. RECOMMEND THAT INSPECTION BE MADE AT CERTAIN TIME INTERVAL AND /OR IF HARD LANDING NOTED. GEAR REMOVAL REQUIRED FOR INSPECTION.