This paper analyzes the failure of high frequency communications system in the operation of Bombardier CRJ-200 aircraft, presents the quickly identification of causes and troubleshooting methods according to the failure and the maintenance manual and combined with the past experience. The faults are analyzed and lessons are learned.%本文对庞巴迪CRJ-200飞机运行中出现的高频通信系统故障进行分析，介绍了根据故障现象，依据维护手册并结合以往经验，快速判明故障原因，排除故障的方法。对故障进行了分析和经验总结。
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