How to make my plane fly in straight line when it isn't being used?

Help and Feedback Scripting Support
,
#1

Ok, so I want to make my plane fly in a perfectly straight line when it is not being used, but i am running into an issue with that, this video shows what is happening:

And here is my code:

--(FlyNoClicking is the event that you should look at)--
script.Parent.VehicleEvent.OnServerEvent:Connect(function(Player, Event, Arguments)
	if Event == "FlyTo" then
		local MouseHit = Arguments[1]
		local Vehicle = Arguments[2]
		
		for _, Part in pairs(Vehicle:GetDescendants()) do
			pcall(function()
				Part:SetNetworkOwner(nil)
			end)
		end
		
		local LookAt = CFrame.lookAt(Vehicle.PrimaryPart.Position, MouseHit)
		local LookAtLerp = Vehicle.PrimaryPart.CFrame:Lerp(LookAt, 0.05)
		Vehicle:SetPrimaryPartCFrame(LookAtLerp)
		
		local Velocity = Vehicle.PrimaryPart.CFrame.LookVector * 55
		Vehicle.PrimaryPart.Velocity = Velocity
	end
	
	
	
	if Event == "FlyToNoClicking" then
		local Vehicle = Arguments[1]

		for _, Part in pairs(Vehicle:GetDescendants()) do
			pcall(function()
				Part:SetNetworkOwner(nil)
			end)
		end
		
		local Velocity = Vehicle.PrimaryPart.CFrame.LookVector * 55
		Vehicle.PrimaryPart.Velocity = Velocity
	end
end)

Again, how can I make it so the plane does not drop when it isnt being clicked, thanks for any help!