随着空中交通密度的不断增加,空中交通管制的作用和重要性日益明显。对空中交通的组织指挥与管理状况实施,在很大程度上影响着民用航空乃至整个航空事业的安全与效率.而机载应答机作为空中交通管制的重要组成部分,应答机的工作是否正常就显得尤为重要。 As air traffic density continues to increase, the role and importance of air traffic control is increasingly evident. The implementation of the organization, command and management of air traffic greatly affects the safety and efficiency of civil aviation and even the entire aviation industry. And airborne answering machine, as an important part of air traffic control, is the answering machine working normally It is particularly important.