Abstract: According to the proposed method for detecting icing of objects found in an air flow, a zone of precipitation of supercooled droplets of water and a zone protected from precipitation of supercooled droplets of water are simultaneously produced in the air flow, which is followed by decelerating the air flow in the zone of precipitation of supercooled droplets of water and measuring the temperature difference between the two zones. The temperature difference is indicative of the icing conditions. The method is carried out with the aid of a device comprising an ice detector having two working surfaces whose function is performed by respective faces of the detector's housing. One surface of the detector's housing faces the air flow and is provided with a recess meant for deceleration of the air flow; the second working surface is the rear face of the detector's housing.