How Can I Turn Off Blue Aerial Lines?

User Support Hub Miscellaneous
2

Hi @FabButterfly399
Do you have "Show 3D thermal enabled at the bottom of the in-flight weather window?
Toolbar - Weather Window

Weather window
Weather window1359×1623 59.5 KB

If that’s not it, check that Aerodynamic Visualization (CFD) is disabled in Settings > General > Flight Interface.