lähenemissektori sees olev õhuruumi osa, mille piires piloot saab teavet, kummal pool õhusõiduk raja telgjoone pikenduse suhtes asub, the volume of airspace, inside the coverage sector, within which the azimuth guidance information provided is not proportional to the angular displacement of the aircraft, but is a constant left or right indication of which side the aircraft is with respect to the proportional guidance sector