It's not uncommon so install an airports whose textures (esp. runways) disappear to grass as you pan or adjust the viewing angle from the cockpit. I often find that making a flatten file to the level of the runway (as per AFCAD2) fixes this, but is there anything to be done when the whole airport's ground textures disappear depending upon which viewing angle you have chosen? A flatten bgl is not always an effective solution. Is there any other way of seeing concrete instead of grass at the apron?Thanks,Martin

It's not uncommon so install an airports whose textures (esp. runways) disappear to grass as you pan or adjust the viewing angle from the cockpit. I often find that making a flatten file to the level of the runway (as per AFCAD2) fixes this, but is there anything to be done when the whole airport's ground textures disappear depending upon which viewing angle you have chosen? A flatten bgl is not always an effective solution. Is there any other way of seeing concrete instead of grass at the apron?Thanks,Martin

Do you have an example of one of these "uncommon" airports?

Sounds a bit like a problem with wrong size parameters in the RefPoint of the objects. But to be sure about that, more detail is needed about how the author made it. In general this is not something the end user can easily solve.

Hmm, well when a flatten doesn't correct the problem looks like I'll just have to put up with it then. Thanks.

I also had a problem with the underlying layer showed through near the airplane when looking down on the ground.I found that raising the flatten by 1 centimeter above the underlying AFCAD fixed the problem.My airport is at 25m elevation so I put the flatten at 25.01m.

I sometimes experiment with elevations in the flatten - often what you suggest does help (but sometimes not).M.