I have that crackling sound with all aircraft. I traced it back to my onboard sound card. When I first had this comp up and running, I had this problem. Then I installed my soundblaster card, and the problem went away. last week, my sound card stopped working for unknown reasons. rather than investigate right then, I just plugged into the onboard speaker jack, and voila, the annoying sound is back. I never think about it unless I am actually flying FS, so I still havnt gotten around to working on the soundcard...
