3 ms·

What are they evading?

• rayiner 8y ago
  Other airplanes.
  • javagram 8y ago
    https://en.m.wikipedia.org/wiki/Traffic_collision_avoidance_system https://en.m.wikipedia.org/wiki/Traffic_collision_avoidance_... If you are interested to read more
• beering 8y ago
  Other airplanes. Also the ground. But the simple autopilots (think an old Cessna) don't even try to avoid the ground for you. If you set it and forget it, you may find yourself dead on a mountainside.
  • mkesper 8y ago
    You can absolutely crash a modern plane by entering altitude 0. https://www.bbc.com/news/world-europe-32063587 https://www.bbc.com/news/world-europe-32063587
    • garmaine 8y ago
      There are runways below sea level. And low pressure zones.