本航空航天推荐规程(ARP)简要讨论了飞机燃油系统中的结冰问题以及用于测试结冰的不同方法。本文提出了飞机燃料系统和部件的燃料制备程序和结冰测试，作为仅用于固定翼飞机及其操作环境的飞机工业中的推荐实践。在本ARP的上下文中，发动机（和APU）不被认为是飞机燃油系统的组件，因为发动机/APU制造商对发动机燃油系统进行了用于商业和特定军事应用的结冰测试。该ARP主要用于解决燃油系统液位测试。它还提供了满足14 CFR 23.951（c）和25.951（c）要求的方法。本文档中描述的一些方法可以应用于发动机和APU级测试或那些应用领域的组件。 该修订没有完全解决管道内部流动导致的结冰的新发展。当有更多的实验数据可用时，这将在未来的修订版中得到解决。有关该主题的一些背景信息计划在AIR790中提供。

This Aerospace Recommended Practice (ARP) covers a brief discussion of the icing problem in aircraft fuel systems and different means that have been used to test for icing. Fuel preparation procedures and icing tests for aircraft fuel systems and components are proposed herein as a recommended practice to be used in the aircraft industry for fixed wing aircraft and their operational environment only. In the context of this ARP, the engine (and APU) is not considered to be a component of the aircraft fuel system, for the engine fuel system is subjected to icing tests by the engine/APU manufacturer for commercial and specific military applications. This ARP is written mostly to address fuel system level testing. It also provides a means to address the requirements of 14 CFR 23.951(c) and 25.951(c). Some of the methods described in this document can be applied to engine and APU level testing or components of those application domains. This revision does not completely address new developments in ice accretion resulting from internal flow in tubing. This will be addressed in a future revision when more experimental data is available. Some background information on the topic is planned to be available in AIR790.