Quote:
Originally Posted by JFK
not sure of the technicalities, you know a lot more about it then I would 
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Its easily done and stored in the receiver. Mine is set for level hover at slightly less than half throttle. This puts the aircraft in a stable, slow descent should loss of radio contact occur. And unfortunately, it does occur sometimes for different reasons, especially on an electric aircraft.
On my planes, it is set to lower landing gear and flaps, reduce throttle and neutralize control surfaces with the hope that the plane will fly straight and descend with minimal damage, but they rarely do that.