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Help with airport elevation

Z

ZFW_FMC

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unitedstates
Hello, so I am in the process of creating a new fictional airport for P3D but having a problem with the elevation and need some help. At the moment I have just a single runway and a small apron for parking. The problem I have is that the area where I want to put the airport is not completely flat and has a slight slope to it which causes the airport the float a little bit above the ground in certain parts and sit below ground in others. To fix this I tried adding a background polygon to even out the terrain below but this didn’t seem to work. So is there a way I can level out the terrain below the airport so the airport has a flat area of land to sit on?

Here are the coordinates for where I would like to put the runway if that helps. Also, the runway is aligned North to South

36°39'19.58"N

117°11'44.99"W


Thanks
 
Last edited:
When you create the airport background polygon, make sure it has Flatten in the properties.
 
tgibson said:
When you create the airport background polygon, make sure it has Flatten in the properties.
Click to expand...
Thanks but I think I already did this. I tried flatten with exclude autogen as well as the one that also masks the class with no luck. Basically, I drew a couple of polygons so the entire airport was covered selected the properties I wanted, and checked to make sure the elevation for the polygons matched the airport elevation.

I will attach a pic to show how I have it set up in the editor. I know the polygon isn't drawn perfectly but as long as it covers the airport I would think it should work.

Edit: So I think I was able to figure it out. I didn't realize that when I compiled it there was a second bgl that was was created with I think CVK in the name once I added that into the sim as well it seems to have worked.
 

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CVX files contain all the terrain elements including your flattens
 
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