This paper describes Global Aircraft Tracking (GAT) system proposed in 2014 to the International \nCivil Aviation Organization (ICAO) by author of this article as major solution in the function of Global \nAeronautical Distress and Safety System (GADSS) for reliable global tracking of missing and hijacking \naircraft in any real time and space. The GAT device as an integration of GPS/GNSS Receiver and Satellite \nTransceiver is programmed to send Position, Velocity and Time (PVT) and other data via Geostationary Earth \nOrbit (GEO) Inmarsat or Leo Earth Orbit (LEO) Iridium satellites to the Ground Earth Stations (GES), \nTerrestrial Telecommunication Network (TTN) and ground Tracking Control Station (TCS). The ground TCS \nis the brain of the GAT network, which is receiving, processing and memorizing all PVT and other data sent \nby an aircraft. The TCS cites will have like radar display to indicate position of all aircraft in certain Flight \nInformation Region (FIR). In case of any aircraft incident TCS will provide PVT data about certain aircraft in \ndistress to be found by the Search and Rescue (SAR) forces in any real time and space of about 2 - 3 days and \nin range of few hundred mails. The GAT unit has to be fully independent of the pilot actions, power supply \nand other navigation and communication equipment in the cockpit. The GAT message has to include the \nairborne equipment identifier (aircraft ID), PVT data with altitude and the date/time of the transmission