As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT AXLE BROKEN IN HALF ON LANDING CAUSING ACCIDENT AND SUBSTANTIAL DAMAGE TO ACFT. AXLE FOUND SEPARATED IN 2 INBD OF INNER BEARING RACE LOCATION. EVIDENCE NOTED OF POSSIBLE PRIOR DAMAGE IN AREA OF CRACK AND SEPARATION, POTENTIALLY FROM PRIOR ACCIDENT OR USE OF SKIS FOR EXTENDED PERIOD. NTSB LAB ANALYSIS IN PROCESS TO DETERMINE CAUSE OF FAILURE.