After installing the navdata MFS2020 it keeps making a "pipipipipi" sound

After installing navdata on MFS2020 it makes a “pipipipipi” sound. After removing the navdata the sound of “pipipipi” to, I tested it only as navdata in the comunity folder and still it continues. Any solution or possible cause?

:flushed: … what? Never heard it and I have no clue, about the reason. Where do you hear this “pipipipi”? When ypu start the sim, during a flight, on an airport … where do you hear this. I’m curious if I can reproduce it …

Do you have any 3rd party sceneries installed?