FSX Dornier Do-X. The Dornier Do X was the largest, heaviest and most powerful flying boat in the world when it was produced by the Dornier company in 1929. The aircraft was conceived by Dr. Claudius Dornier and took seven years to design and another two years to build. In the design process, a one-to-one wooden mock-up, the first in aviation history, was built. This is the Gmax Dornier DO-X base package. Includes 2D panel, 3D panel, sounds and polished aluminium textures (without paint scheme). Inspired in the real aircraft. By Project Eolo - Aeolus Project and Adapted for FSX by Eric Buchmann.