Modster F-22 Raptor Handbuch Seite 19

One-key Aerobatics Instruction
The one-key aerobatics feature allows beginner pilot to
perform aerobatic actions by simply pressing the button
on transmitter.
transmitter will beep several times. During the beeping,
simply move the aileron stick to either direction for auto-
roll. Or move the elevator stick to either direction for auto-
loop.
One-key U-turn Instruction
The F22 Raptor comes with one-key U-turn function, which enable the plane to return by
Follow below steps to activate the function.
2. Do NOT unlock the throttle, press the activation button and hold for several seconds
until you hear a "beep" sound, the rudder surface will respond, meaning the one-key
U-turn function is now activated.
NOTICE: Every time when you power on the plane, it requires to activate the one-key
U-turn function.
To quit, just press again the switch button, or control
any servo stick(rudder/elevator), the plane will back to
under manual control or gyro assist mode, when you
turn on the one-key U-turn function, the plane will
enter gyro assist mode automatically to help stable
back to the what the control mode it was.
CAUTION: This function is bound to the receiver,
instead of to the transmitter, which means the plane will return ONLY to the opposite
position where you activated the function, the one-key U-turn function will NOT return
Gyro System Calibration
1.Turn the throttle stick to min position.
2.Power on the transmitter and the receiver.
3.Do NOT unlock the throttle.
4.Keep the sticks as above picture for several seconds.
5.When you hear a "beep" sound, it means the gyro
system is calibrated based on the horizontal level you are
keeping it.
One-key U-turn
Activation
One-key U-turn
Switch
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One-key Aerobatics