Abstract: An aircraft ground support unit, which is mobile, for supplying a service to an aircraft on the ground according to a specific servicing program is provided that includes a GPS to identify an instantaneous position of the ground support unit, a receiver suitable for identifying an aircraft by receiving information emitted by a transponder of said aircraft including one or more of: an instantaneous GPS coordinates of an aircraft position, an identity of the aircraft, a type of aircraft, a company of the aircraft, or aircraft status data, and a microprocessor configured for calculating a distance, d, of the aircraft from the ground support unit, selecting a predefined specific servicing program stored in a database corresponding to the type and company of the thus identified aircraft, controlling the ground support unit to implement the thus selected specific servicing program, and logging aircraft and ground unit data for airlines optimization.