Profile: Thales A T M, Inc. is a supplier of air traffic management systems and services. Our instrument landing systems (ILS) assist the majority of airplanes to land at airports. Fully compliant with all ICAO Annex 10 and U.S.A. FAA requirements, the ILS family of compatible products span all categories of ILS, from single channel, single frequency Category I (CAT I) landing operation to the most demanding CAT III installation. Cat I, II and III systems give precision navigational information to pilots in varying weather conditions. This system assists pilots when visibility is as low as 800 meters, with a decision height of 200 feet. Cat II systems allow landings with visibility of 400 meters and a decision height of 100 feet. Cat III systems allow planes with 300 feet visibility to land safely.