As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT MAIN TIRE WAS SKIDDED ON RUNWAY TO THE POINT OF TIRE FAILURE. LEFT MAIN GEAR THEN COLLAPSED. INVESTIGATION REVEALED LANDING GEAR DOWNLOCK TENSION WAS 15-20 POUNDS. BEECHCRAFT SM REQUIRES DOWNLOCK TENSION TO BE 45-65 POUNDS. IT IS SUPPOSED THE ADDITIONAL LOADS IMPOSED BY THE TIRE FAILURE CAUSED THE DOWNLOCK TO MOVE OVER CENTER DUE TO THE LOW DOWNLOCK TENSION.