Solved Runaway Arrow

Hello!
So I'm creating a vehicles plugin, that allows you to spawn in helicopters and tanks and etc that are made up of armorstands and blocks. Each vehicle in turn can do a special ability eg shoot tnt when the passenger right clicks an item, say, gunpowder. I have a helicopter whose special ability is to toggle a hover ability. However, things get a bit funky:
This is how it looks like the first time you spawn it:

This is what it looks like when you ride it (without the hover ability):
But this is what it looks like when you activate the "hover" ability:
The arrow ends up all the way there!
It gets even stranger: when I shoot arrows, they shoot as if I'm still on the helicopter:

I did a Bukkit#broadcast on the arrow's location, but it said that it's in the correct location (under the front of the helicopter)
If I toggle the hover ability back off, the arrow pops back in place, but then flies back away when I toggle it back on.
Does anyone know why this is happening?
Thanks for any advice!

 

@Side8StarLite
What happens when you toggle the hover ability? Do you have any code to teleport the arrow when this happens? Does the player dismount when that happens?

 

@Zombie_Striker
Your second point helped alot! I managed to fix the problem by teleporting the arrow to the location I needed during the hovering ability. It's a dirty and quick solution, but it works! Thanks for the help

 

@Side8StarLite
If your problem has been solved, mark this thread as solved.