What is wrong with this model relocator?

script.Parent.ChildAdded:connect(function(child)
    if (child.Name == "SeatWeld") then
        local Char = child.Part1.Parent
        local Human = game.Players:GetPlayerFromCharacter(Char)-- Relocate
        if (not Human) then
            return
        end
        local heli = script.Parent.Parent
        heli.Parent = game.Players.LocalPlayer.Character
    end
end)

script.Parent.ChildAdded:connect(function(child)
    while wait(0.2) do
        if script.Parent:FindFirstChild("SeatWeld") == nil then
            local Char = child.Part1.Parent
            local Human = game.Players:GetPlayerFromCharacter(Char) -- Locate out (if left seat)
        if (not Human) then
            return
        end
        local heli = script.Parent.Parent
        heli.Parent = game.Workspace
        end 
    end
end)

This is placed in a seat. It works perfectly fine in studio but in server mode, the helicopter model doesn't move into the player model