本文件规定了民用无人机系统（UAS）的分类和分级要求。本文件适用于比空气重的飞机以及任何可能结构的比空气轻的飞机。 本文件适用于民用无人机的工业概念、开发、设计、生产和交付。它也适用于民用无人机的改装、维修和维护。 本文件中的特征可单独使用或组合使用，以满足民用无人机分类和分级的具体需要。 基于风险的无人机操作分类是航空当局的特权，因此不在本文件的范围内。

This document specifies requirements for the classification and grading of civil unmanned aircraft system (UAS). This document applies to heavier than air aircraft as well as lighter than air aircraft of any possible architecture. This document applies to the industrial conception, development, design, production and delivery of civil UAS. It also applies to modification, repair and maintenance of civil UAS. The characteristics in this document can be used individually or in combination, to meet specific needs of the classification and grading of civil UAS. Risk-based categorization of UAS operations is prerogative of the aviation authorities and it is hence out of scope of this document.