su1 = "Su25" createVehicle [1500,1500,10000]
su1 setdir 45
ep1 assignasdriver su1
ep1 moveindriver su1
ep1 move [5000,5000,200]
su1 setvelocity [100,100,100]
su1 flyinheight 200
I think the key is to create the plane high enough and/or give it some velocity to start with.