Is this problem related to the explanation regarding floating trees?I made a building with gmax and placed it over a mesh and over photo terrain texture, it worked well untill I put materials to the object,its not a flickering effect, it just dissapears some times depending on distance and viewpoints. I followd the "disappearing trees" sugestions,and greatly incremented fps, reduced max vertex level from 25 to 20,placed it on a different scenery at the upmost layer; but no change, besides, Airport2.6

Okay Door Key :-)Open up the texture in Imagetool and save as DXT with mipmaps.That'll salve the problem!

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That solves some of the problem, however, small objects like taxiway signs, trees and transparent towers etc loose their textures way too soon.The trick is to make FS see a larger object than what is actually displayed.Create a large transparent bitplane and stick it 1 metre into the ground under your object. Don't forget to "attach" the two when converting to an editable mesh so it becomes one object.Here's an example of a Distance Markerhttp://members.rogers.com/klasik2/trick.jpgYou should also increase the viewing distance to 50,000 metres on exporting. The viewing distance is proportional to the size of the object.It took me a long time to figure this out and it works like a charm.I hope this helps someone.Also, this is the important part of doing animations. One needs a large transparent bitplane under the entire animated area. eg. a moving boat in the water, a truck moving from one spot to another.http://members.rogers.com/jkanold/jimlogo.gifhttp://members.rogers.com/eelvish/flyurl.gif