Instrumental Landing System (ILS) is an internationally normalized system for navigation of aircrafts upon the final approach for landing. It provides the horizontal as well as the vertical guidance necessary for an accurate landing approach thus in conditions of limited or reduced visibility.
It is a guidance and control system in the process of approximation of the aircraft. It facilitates the pilot distance information and guiding the aircraft to the longitudinal axis and the plane to land right in the center of the track and with enough space to slow descent. These aids provide maximum safety during manoeuvres most critical air navigation, and are an essential part in severe weather situations.
Thales ILS are installed in over 700 airports worldwide.