South Korea has to redesign parts of its Surion Helicopter, reports Yonhap News Agency. The Surion did not pass the months-long test as it did not operate sufficiently under extreme and challenging climates. Different parts of the Surion didn’t meet the international standard. The failed parts are now being remade and put under the test again, in order for the Surion the pass. South Korea needs the pass if they wish to export the helicopter.