FSX/P3D – MachLoop Flight Plans. The Mach Loop is a low-level and high-speed military training route located in RAF Low-level Flying Area 7 (LFA 7) in Wales, United Kingdom. It is also known as the Machynlleth Loop. The Mach Loop is used by NATO to train tactical aircraft aircrew in low-level flight procedures. Aircraft used for training include the F-15C, F-15E, F-16, A-10, F/A-18, A-6; RAF Hawks, Tornados, Buccaneers, and even C-130s. The flight plans in this package originate and end at RAF Valley in Wales, which is commonly used as a base for units using the Loop. The download includes flights that are compatible with P3D and FSX, and JPEGS, PDFs, and KML files that help the user understand the routes.