Thanks Tankbuster, it works now. Well mostly I still need to figure out why after about three to four minutes after service has been completed any vanilla or modded aircraft or helicopter will disappear and then respawn where it was placed in the editor. It's almost like the game is thinking that the aircraft or helicopter that's just been serviced has been damaged and must been respawned. I'm wondering if this is a conflict between GVS and the Basic Vehicle Respawn Script by [EVO] Dan.