As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT EXPERIENCED A COLLAPSE OF THE NOSE GEAR DURING TAXI AFTER LANDING. AFTER RECOVERY,IT WAS DISCOVERED THAT THE DRAG LINK BOLT P/N 402-940 HAD SHEARED. I BELIEVE THE COMBINATION OF A FLAT NOSE TIRE AND UNSATISFACTORY TAXIWAY CONDITIONS(I.E. SLUSH AND ICE) AT KCMI PUT EXCESS FORCE ON THE GEAR CAUSING THE BOLT IN QUESTION TO FAIL.