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P3D v4 Can’t successfully adjust the length of stock runway

C

Colin Gray

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ca-britishcolumbia
Afternoon,

Doing some flying around the Himalayas. There is very little in the way of upgrades to the stock P3D airports in this region. Using SBX and Google Earth, I’m trying to adding aprons and correcting the runway length. I lengthened the runway at Jomsom (VNJS) - no other changed were made. When I spawn to the active runway, this is what I see:

J02WMYh.jpg


6uhVp6A.jpg


Nothing was done to the elevation, but it looks like the runway is now floating on or above something. I have FTX Global and ADE is turned on for this airport. This is what Jomsom looks like without the lengthened runway (ADE is still turned on):

2sIUF90.jpg


Any ideas on what I am doing wrong?

Thank you in advance.

Colin
 
You have to flatten the area at the end of extended runway, I assume?
 
Good morning, Tom. Thanks for the reply! I tried both flatten and flatted map class as well as airport background flatten (I'm assuming that's what you meant). Neither worked. It looks as though I am inside of a mountain that doesn't exist on the default runway. I've added about 45m of runway to either end, but the start position is in the same spot as in the default.
 
Colin,
have you 'excluded' the default airport background and replaced it with a new one that goes beyond your new runway extensions?
 
@raymk ,
Thanks for suggestions! I have made an exclusion polygon around the runway and played with exclude autogen, flatten, flatten mask class map, and flatten mask class map exclude autogen with no luck. Not sure if that's what you mean by exclude the default airport background. Do you mean Exclude General: Airport Backgrounds instead?

The second part of your question - replacing it with a new back ground - I have not done. I don't know how to do that. It gives me something to look up this morning.

Thank you!
 
Last edited:
@tgibson I was reading one of your earlier posts from October 2016. You talk about the polygon crossing over the original background boundary. Is this just the runway or is there a specific way to determine the background boundaries?

Cheers,

colin
 
Colin Gray said:
@raymk ,
Thanks for suggestions! I have made an exclusion polygon around the runway and played with exclude autogen, flatten, flatten mask class map, and flatten mask class map exclude autogen with no luck. Not sure if that's what you mean by exclude the default airport background. Do you mean Exclude General: Airport Backgrounds instead?

The second part of your question - replacing it with a new back ground - I have not done. I don't know how to do that. It gives me something to look up this morning.

Thank you!
Click to expand...
You create a small polygon that 'cuts' the outline of the original background. [This background is what flattens the area required for the airfield.] You define this polygon as "Exclude general" and "Airport backgrounds". This is what eliminates the original background.
Then you create another polygon to suit the area that you need for runways, etc.. Define this polygon as "Airport background" and "Flatten, Mask Class Map, Exclude Autogen". This creates a new background.
When you compile you should see a CVX file as well as the normal airport file.
 
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