Jet Aviation is preparing to open a new executive terminal at Germany's Dusseldorf Airport by the end of this year. The Swiss-based group, which won a competition against seven other companies to build the 4,305-sq-ft facility, plans to start construction next month. Jet Aviation has operated an FBO from somewhat limited premises there for several years. Its other European FBOs are at Zurich and Geneva in Switzerland and at London Biggin Hill. The company also plans to open an FBO in Kuwait by late next year.