I will look into this, but since I don't have the DX10 mod installed, it may take me a while to determine what's causing this. 

Try this:

 

In the FSX Effects folder you will find the file DC8_Beacon.fx.  Rename it as a backup - it could be DC8_Beacon_ORIG.fx or anything really.   

 

Then find fx_navred.fx in the same folder. Copy this file, paste it somewhere else and rename it DC8_Beacon.fx.  Then put it back in the FSX Effects folder.  

 

I think this will probably fix the issue -- I am assuming your nav lights display OK?

@Michael2

 

Hi Michael

I dont have any problem with other lights, only with beacon light.

 

Worked , but would like use dc-8 light, I think there is a little problen with dx10

 

Thanks to make the dc8

 

Regards

 

Brisafresca