236 incidents
  • 132 accidents with 56% fatality rate
  • 3 air to air contacts per month
  • 1 fatality every two months
  • 55% near airports
  • Non-standard pattern and sun angle factor
  • 34% flight instruction
  • 92% VFR conditions even if IFR flight
  • Biplane increases risk
  • 10% during formation flight