Translations:Help:AttitudeControl/6/en
When using a single-line receiver you must go into Receiver setup menu and assign the switch channel for AttitudeControl either by moving the switch on the transmitter at Receiver menu point J, by loading the default assignment or by skipping menu point J in order to use the gyro channel for the AttitudeControl.
Also when using a standard receiver you must go into receiver menu, select "Standard receiver" as type at menu point A (if not done already) and then confirm the type selection by pressing the button short. If you don't do this the assignment gyro channel<->AttitudeControl is not set and you won't be able to switch AttitudeControl on and off.
Please note that after adjusting the receiver setup menu for safety reason AttitudeControl (and also the RPM Governor function) will be reset to default. So after doing the adjustment in receiver menu select your desired AttitudeControl mode a Parameter menu point M again. Otherwise it will still not work.