FSX. Iris Flight Simulations has just announced the launch of the Pro Training Series Pilatus PC-21 75th Anniversary Edition. According to the developer, the 75th Anniversary Edition of the popular Pilatus PC-21 is a brand new direction for the product and celebrates 75 years of Pilatus aircraft. Since Iris' PC-21 simulation release 18 months ago, they received invaluable feedback from fans and customers, and have been quietly producing a brand new product with a primary aim to improve simulation performance and stability, while providing continued improvements to the existing product. For more information, click the source link below!