Chinook gets stuck

I noticed the Chinook gets stuck around S17/S18 untill it despawns.

Ill send you a plugin.    You can set its flight height above the hill etc

gets stuck on my server as well

and the bog and river has no water in it

also gas station floor to hole in ground has dirt in it needs one of the masks added cant remember which though

as well as cargo goes inside the island on the east side so its path needs adjusted