Abstract: An apparatus for adjusting the track of rotor blades through remote control, especially of a helicopter during flight. Each rotor blade has a two-part, lengthwise adjustable control rod with a servomotor which is associated with the supply unit for rotor blade control. A receiving/transmitting part is provided, and a control device (potentiometer) as well as a measuring device are installed in the control rod and are operatively connected with an operating station having an indicator or monitor. The receiving/transmitting part, and the energy source of the servomotor associated with the supply unit for rotor blade control, are integrated in the control rod and are combined with the servomotor to a structural unit and are accommodated in a common housing.