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某型飞机在外场飞行、维护和内场调试过程中,多次发生因虚警报“СО”(转速急降)故障,检查发现发动机及相关附件并无故障,而是由于改装虚警隔离相关电缆线路中所出现了故障而产生告警信号。针对这一故障现象,对改装虚警隔离装置的工作原理和线路故障进行分析,找出“СО”虚警故障的原因以及电缆故障的原因,提出修理和维护的方法和建议,为相关从业者提供借鉴。
A certain type of aircraft in the field of flight, maintenance and in the field of debugging process, several times due to false alarm “СО ” (speed drop) failure, check the engine and related accessories found no fault, but due to modified false alarm isolation Relevant cable lines in the emergence of a fault alarm signal. In view of this phenomenon, this paper analyzes the working principle and circuit fault of the modified false alarm isolating device, finds out the reason of “СО” false alarm and the reason of the cable fault, and proposes the methods and suggestions for the repair and maintenance. Practitioners to provide reference.