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Failsafe (Safety Function During Radio Signal
Interference) Actions
If the radio signals for controlling the flight do not reach the helicopter due to interference, the helicopter will be
rendered out of control, which creates a dangerous situation. In case of radio signal interference, the system
has a safety feature that alternately flashes the inner and outer lights of the red YACS warning lights and auto-
matically effects the flight control described on the following pages. Thoroughly familiarize yourself with this
feature to take the appropriate actions.
During signal interference, never approach
the helicopter until the main rotor has come
to a complete stop and the engine has
stopped. If there are any people in the area,
instruct them to leave the area immediately.
G Do not fly any higher than 3 to 4 m (above
the ground or crops). When radio signal
interference occurs (i.e. when failsafe
mode is engaged), the engine speed is
automatically brought to idling state after
40 seconds. Flying at a higher altitude will
cause the helicopter to descend abruptly.
G Make
sure
to
instructed in the manual. Failure to do so
could cause the helicopter to move unex-
pectedly or descend suddenly once it
recovers from the radio signal interfer-
ence, and could lead to an accident.
G Do not resume flying until you have veri-
fied and eliminated the cause of the radio
signal interference. Otherwise, you could
lose control of the helicopter again, lead-
ing to an accident. (See pages 4-9 and 4-
25.)
DANGER
WARNING
follow
the
"Actions"
Pre-Flight Inspection Items
3-12
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