20 Chapter 2 Flight Safety
obstacle is detected in front of the aircraft, the aircraft will automatically brake within the set
brake distance and autonomously choose a random direction from the left, right, or upward
directions to bypass the obstacle.
During the obstacle avoidance process, if the aircraft's ascent altitude reaches the
maximum altitude limit and obstacle avoidance is not yet achieved, the aircraft will hover
in place until a critically low battery landing is triggered. In this case, please manually take
control of the aircraft in advance.
When the obstacle avoidance mode is set to “Bypass”, the aircraft will prioritize planning to
bypass the obstacle from the left or right direction. If neither left nor right directions are
feasible, it will choose to bypass the obstacle from above.
During flight missions, if the obstacle avoidance mode is set to "Off", the aircraft will not
have obstacle avoidance capabilities.
Landing Protection Function
When the landing protection function is enabled, the aircraft will assess whether the ground
conditions are suitable for landing before landing. For more information, see “6.5.2 OA Settings”
in Chapter 6.
During the auto-return process, when the aircraft reaches above the home point and the landing
protection function is enabled, the aircraft will execute the following strategies:
1. If the landing protection function detects that the ground is suitable for landing, the aircraft
will land directly.
2. If the landing protection function detects that the ground is not suitable for landing (e.g.,
uneven ground or water below), the aircraft will keep hovering, send a prompt in the Autel
Enterprise App, and wait for you to take action. In this case, the aircraft will start descending
only when a critically low battery landing is triggered, and you cannot cancel this process.
3. If the landing protection function cannot detect ground conditions, the aircraft will descend
to an altitude of 1.2 meter above the ground and enter the assisted landing process.
Assisted landing: During the landing process, when the aircraft reaches an altitude of
1.2 meter above the ground, it will automatically descend slowly and you do not need to
lower the throttle stick.
Before entering the assisted landing process, make sure that the landing point is suitable
for the aircraft to land.
Rebuilding the C2 Link
To ensure the safety and controllability of flight behaviors, the Autel Alpha aircraft will stay in
reconnection status and constantly attempt to reestablish a connection with the ground control
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