Integrated Modular Avionics ( IMA) which is widely used on current civil aircraft leads to lots of similar design and shared resources. This challenges the objective of control of development Error. For the purpose of limiting development Error to an acceptable level and finally getting certification accept-ance,discusses the method and process of development assurance level assignment for Integrated Modular Avionics of civil aircraft based on the guideline in ARP-4754A. Gives three guiding principles which are applicable to the assignment for Integrated Modular Avionics of civil aircraft. Provides a valuable guidance and experiences for control of development Error of civil aircraft Integrated Modular Avionics,and gives a beneficial reference for the development of Integrated Modular Avionics platform.%当今的民用飞机普遍使用综合模块化航电(IMA)系统,使飞机上出现了大量的相似设计和资源共享的情况,这为控制研制过程中引入的差错带来了许多挑战.以适航取证为目标,为将研制差错控制在可接受范围内,按照ARP-4754A提供的指导原则,对民用飞机综合模块化航电系统的研制保证等级分配方法和过程进行了分析,得到了适用于民用飞机综合模块化航电系统研制保证等级分配的3点指导原则.为使用综合模块化航电系统的民用飞机的研制差错控制提供了有价值的指导和经验,也为综合模块化航电系统平台的研制提供了有益参考.
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