This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 Another experiment of mine with the landing gear doors :D [In economics, a virtual airline is an airline that has outsourced as many possible operational and business functions as it can, but still maintains effective control of its core business. Such an airline focuses on operating a network of air services, and outsourcing non-core activities to other organizations. Contracting out services within the aviation industry has reportedly become so common that many carriers could be classed as having features of a virtual airline, although it is arguable whether any current carriers meet a strict definition of the term.] Trawel Fly has offices in Milan and in Legnano, Milan Province. It has 1 Boeing 737-400 {CONSTANTLY BEING REPAINTED WITH DIFFERENT REGISTRATION NUMBER} that is operated by Mistal Air, though it has it's own livery. Trawel Fly has implemented the concept of virtual airline in which it takes responsibility for network planning, distribution channels and the entrepreneurial risk for the operating activities while flights are operated under wet lease contracts with selected ACMI partners. For this reason, not being an officially licensed airline, Trawel Fly does not have its own IATA code and it varies in function of the flight operator.