Model Aircraft Design software for Windows PC. Model Air Design is the new, quick and easy way to create airplane models. It's a modern software tool for model aircraft design. Model Air Design is for every person, young or old, who has a desire to design and create airplane models but have found Computer Aided Design (CAD) software too difficult and time-consuming to learn. We have developed a method for you to design computer models, in 3D format, without the complexity of CAD software. It is so easy and intuitive to use that you will have no difficulty learning to create with it. You will be designing airplane models in a matter of minutes.