This paper describes Global Aircraft Tracking (GAT) system proposed by the author of this article in 2014 to the International Civil Aviation Organization (ICAO) as only solution for reliable global tracking and detecting of missing and hijacking aircraft in any real time and space. The GAT device as an integration of GPS/GNSS receiver and satellite transceiver is programmed to send Position, Velocity and Time (PVT) and other data via Geostationary Earth Orbit (GEO) Inmarsat or Low Earth Orbit (LEO) Iridium satellite constellations to the Ground Earth Stations (GES), Terrestrial Telecommunication Network (TTN) and ground Tracking Control Station (TCS). The ground TCS is the brain of the GAT network, which is receiving, processing and memorizing all PVT and other data sent by an aircraft. The TCS will have like radar display to indicate position of all aircraft in certain Flight Information Region (FIR). In case of any aircraft incident TCS will provide PVT data about certain aircraft in distress to be found by the Search and Rescue (SAR) forces in any real time and space of about 2-3 days and in range of few hundred mails. The GAT unit has to be fully independent of the pilot actions, power supply and other navigation and communication equipment in the cockpit. The GAT message has to include the airborne equipment identifier (aircraft ID), PVT data with altitude and the date/time of the transmission.
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