A drone that can safely fly low to the ground by following the contours of the terrain unlocks many new autonomous flight possibilities. For example, cropdusting drones would be able to handle that dangerous job, reducing the risk to pilots and farmers. Our avionics suite, comprising of LiDAR and radar alongside a complete software stack, aims to enable a fixed-wing drone to autonomously fly terrain following missions at heights of 10 meters or less above the ground while also avoiding obstacles in the aircraft's path.