Futaba 10J - Manual (Page 45)

When normal radiowaves cannot be received due
to noise and interference, the NOR mode, which
holds the servo of each channel in its position
immediately before reception was lost, or F/S (Fail
Safe) mode, which moves the servo of each channel
to a preset position, can be selected. When T-FHSS
Air is selected, the battery fail safe voltage can be
set.
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For safety, always set the fail safe functions.
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the servo moves to the maximum slow side for airplanes and
to the slow side from the hovering position for helicopters.
Crashing of the model at full high when normal radio waves
cannot be received due to interference, etc., is very dangerous.
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be mistaken for an engine malfunction and will be reset at
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any doubts, immediately land.
WARNING
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