3D Robotics X8 Ready-to-Fly 2013 - Manual (Page 5)

Your copter has powerful motors and high-speed propellers. Never
place your hands near propellers while the motors are armed. Always
disarm the motors using the RC transmitter before handling.
Always fly in an open area away from people and buildings; do not
attempt to fly indoors or in a confined space. Do not fly over people,
near airports, or in any situation that could pose a hazard to those
around you. Always fly within your line of sight and in compliance
with local regulations. Your copter will not avoid obstacles on its own.
As the operator, it is your job to recognize and avoid obstructions
while flying. Always follow the preflight and postflight steps in the
order described in this manual, and remain attentive at all times while
flying.
Environmental factors, such as wind and GPS irregularities, can cause
instability in flight. To avoid potential hazards due to environmental
factors, identify the boundaries of your flying area before takeoff, and
recover the copter manually by switching into stabilize mode if it
moves outside your designated flying area.
Always use an RC transmitter as a primary or backup control system
when flying. Ensure that the transmitter is turned on any time the
copter is powered.
!
Flight safety