Well all scripted aircraft in GWX either have a last waypoint over land or exit on last waypoint - and the only scripted air are for historic missions or attacks on players bases
Apart from some neutral patrols which begin and end over land before looping
Aircraft that spawn from airbases do so at a height of 500m and do not have waypoints
And the aircraft flying into the water\land or pinwheeling into the water isnt a GWX effect but a stock one
Sometimes wonder if anybody lately played stock before installing GWX