Chapter 2 Flight Safety 21
station (remote controller) after losing the C2 link. In practice, this process is divided into the
following stages:
Within the first 4 seconds after the link is disconnected, the aircraft will automatically
decelerate and attempt to restore the C2 link. If the connection is restored within 4 seconds,
the remote controller regains control of the aircraft.
If the link is not restored within 4 seconds, the aircraft will automatically trigger the lost action.
At this point, the aircraft will automatically execute relevant flight control actions according
to the set lost actions.
During the execution of a lost action, the aircraft will continue its attempts to restore the C2
link. When the aircraft successfully restores the C2 link with the remote controller, the remote
controller still cannot control the flight of the aircraft. To make the remote controller regain
control of the aircraft, you must long press the pause button “ ” on the remote controller
for 2 seconds or pull the pitch stick to exit the lost action.
During the flight, as long as the aircraft and the remote controller can communicate
normally, the C2 link will remain active.
If there are decoding errors that persist for a certain duration, leading to communication
failure, the C2 link will be disconnected, and the aircraft will enter the reconnection status.
The lost actions of the Autel Alpha aircraft include RTH, hover, and land.
If Autel Alpha aircraft lost connection with C2 link, the Autel Enterprise App will display a
warning saying “Aircraft disconnected.” with a corresponding verbal warning.
For details about pitch stick, please refer to “4.10 Selecting Stick Mode”.
Flight Restrictions and Unlocking Restricted Zones
Before flying, always carefully plan out the airspace in which you intend to fly in accordance
with local laws and regulations.
Geofencing System
Autel Robotics has developed a geofencing system for its aircraft to ensure safe and legal flights.
This system can provide real-time updates on airspace restriction information worldwide. In
different restricted zones, the flight functions of the aircraft are subject to varying degrees of
restrictions. The geofencing system also supports the function of unlocking restricted zones. If
you need to perform a flight mission in a specific restricted zone, you need to obtain legal
authorization for unlocking the restricted zone, and then the relevant flight restriction of the
aircraft will be unlocked within the authorization validity period.
The geofencing system does not strictly follow local laws and regulations. Before each flight, you
should consult and understand local laws, regulations, and regulatory requirements to ensure
flight safety.
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