Updated on 07/04/2019: Invisible Zeppelin issue in FSX and P3D fixed.
The Zeppelin NT (Zeppelin New Technology) is a type of airship built in the 1990s by the German company Zeppelin Luftschifftechnik GmbH in Friedrichshafen.
This add-on was done with FSDS3.5. The features are: Multiple LOD-model with animations for FSX/P3D. Fully operable virtual cockpit, lighting and effects. A set of repaints and four textures are included.