As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON LANDING ROLL-OUT THE NOSE GEAR COLLAPSED. THE CRACK ON THE SPLINE PORTION OF ARM CAUSED THE ARM TO FLEX AND OPEN CAUSING MATING GEARS TO SEPARATE AND THE NOSE GEAR TO COLLAPSE. PROBABLE CAUSE IS FATIGUE. REOCCURRING INSPECTIONS ARE RECOMMENDED.