Yamaha RMAX Type II G Unit Operation Manual page 14

Safety Precautions
The unmanned helicopter for industrial appli-
cations is operated by way of radio signals.
To prevent the helicopter from going out of
control due to unexpected radio signal inter-
ference, pay careful attention to any radio
signal interference before and during a flight.
Select areas that are appropriate for takeoffs
and landings, as described below. Failure to
select an appropriate area could lead to an
accident.
G Select flat farm roads or vacant lots with
minimal foot or vehicle traffic.
G Check that there are no obstacles in the
vicinity.
G Check that there are no objects that could
be picked up by the wind (such as mowed
grass, plastic tape, plastic bags, etc.).
Abort the flight or aerial application if poor
weather conditions exist as described below.
Failure to do so could pose operation diffi-
culties, which could lead to an accident. In
addition, it could adversely affect the applica-
tion and the effectiveness of the sprayed
chemicals.
G Wind velocity in excess of 3 m/s at a
height of 1.5 m above the ground.
G Rain, fog, or lightning in the close vicinity.
Keep the maximum horizontal distance
between the operator and the helicopter
within 150 m, and the flight altitude at 3 - 4 m
(from the ground or from the crop). If the dis-
tance is any greater, it will prevent the opera-
tor from monitoring the posture of the
helicopter and adversely affect the signal
reception conditions.
For safety, further shorten the distance if
there are any obstacles in the area.
Failure to fly the helicopter within the maxi-
mum distance limit could lead to an accident.
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WARNING
WARNING
WARNING
WARNING
3-4m