/c
local surface = game.player.surface

for c in surface.get_chunks() do
    for key, entity in pairs( surface.find_entities_filtered( { area = { { c.x * 32, c.y * 32 }, { c.x * 32 + 32, c.y * 32 + 32 } } } ) ) do
        if entity.name == "deadlock-loader-5" then
            local X = entity.position.x
            local Y = entity.position.y
            entity.destroy()
            surface.create_entity( { name = "rapid-transport-belt-mk2-loader", position = { X, Y }, force = game.player.force } )
        end
    end
end