February 26th, 2015, 23:05
Somethings very odd here! In your facilities folder remove the b_landing and g_landing files. If you have them remove the b_takeoff and g_takeoff as well. There may be files with the same name in the vehicles folder too, remove them as well. I'm guessing that they're spawning randomly in the campaign - something I've never come across.
If that doesn't do it, you have ghosts in your install! :onthego: