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2015年1月10日,辽宁省大连市无线电管理委员会办公室接到大连机场航空盲降无线电干扰投诉,称机场发现不明电磁信号干扰飞机导航,导致4架航班在着陆时出现盲降信号不稳定的现象,严重威胁机场飞行安全。接到干扰投诉后,大连无委办立即启动应急预案,并迅速调集监测人员,出动移动监测车,赶往机场进行干扰排查。监测人员对机场仪表着陆系统受干扰情况进行了实地分析。从干扰出现的时间来看,怀疑可能是由频率为ⅩⅩ.ⅩMHz的非法广播电台带外杂散信号对导航频率造成了同频干扰,
On January 10, 2015, Dalian Radio Management Committee Office received a complaint of airfield blindness radio interference at Dalian Airport, claiming that the airport found an unknown electromagnetic signal that interfered with the navigation of the plane, resulting in the instability of the blind landing signal of the four flights upon landing Phenomenon, a serious threat to flight safety at the airport. After receiving complaints of interference, Dalian did not immediately start the emergency response plan, and quickly mobilize the monitoring staff, dispatched mobile monitoring car, rushed to the airport for interference investigation. The monitors conducted on-site analysis of the disruption of the airport instrument landing system. From the time of appearance of interference, it is suspected that the out-of-band spurious signals of the illegal broadcasting stations with the frequency of XX.MHz may cause the same frequency interference with the navigation frequency,