After the announcement a few months ago to extend the X-Plane 11 standard Boeing 737-800 by a 737-700 and a 737-900ER with the project “737 Ultimate”, the Boeing 737-900ER Ultimate has now been the first aircraft in the public beta for a few days. Among other things, it has LED lighting, a complete 3d interior, its own cockpit textures as well as a viewer for maps and checklists and more. In addition, the Zibo-Mod is already supported. The series is freeware, so v0.2.5 is available for free in the download database of