The self-propelled passenger stairs model CT-PS580 is designed for boarding and unloading of passengers, crew and technical personal access to the AC and to serve various types of aircraft with door sill heights from 2200 to 5800 mm. The CT-PS580 self-propelled passenger stairs is mounted on a special chassis and characterized by high reliability, wide range of usage, application of advanced technologies, excellent appearance, functionality, simplicity and safety in use in harsh climatic conditions on a snow-covered apron. The range of service temperature is from -40 to +40 degrees 0C. Two types of such passenger stairs model are possible to be designed: diesel version with Cummins QSF 2.8 power unit with power capacity 36.6 kW (upon Customer’s request the Cummins QSF 2.8 installation with power capacity 54 kW is also possible) and electric version (E). Optional possibility of installation of canopy or fully closed gallery on the upper platform and the ladder is possible. This model of passenger stairs is widely used in airports for various purposes and correspond standards of IATA AHM 905, AHM 910, AHM 913, AHM 915, AHM 916, AHM 920.