美国方面无视国际法上的有关制度 ,滥用飞越自由 ,是造成此次撞机事件的主要原因。美方辩称４月１日的撞机事件发生在国际空域 ,在该空域的美国飞机享有飞越自由。必须指出 ,此次中美飞机相撞发生在距离海南岛东南仅１０４公里处的中国近海上空 ,这是属于中国专属经济区的上覆? The United States ignored the relevant systems in international law and its abuse of freedom of overflight was the main reason for the plane collision incident. The United States has argued that the plane collision incident on April 1 occurred in the international airspace, and that U.S. aircraft in that airspace enjoyed freedom of overflight. It must be pointed out that this time the collision between China and the United States took place over the sea off China, only 104 kilometers southeast of Hainan Island, which belongs to the exclusive economic zone of China.