运输封闭的主要目的是保护飞机部件或系统不受存储盖、盖子、塞子和相关运输硬件的影响。这些项目通常用于飞机发动机和相关硬件，但也可用于其他地方。军事和商业客户对防止存储部件损坏或污染的要求通常限于通用说明“所有开口应充分覆盖，以防止灰尘、污垢、湿气或其他外来污染物进入”。 本推荐规程概述了建议项目施工和使用的基本最低参数。此外，本推荐做法还提供了如何将这些封闭件应用于各种开口的说明。

The primary purpose of the shipping closure is to protect the aircraft parts or system from storage caps, covers, plugs and related shipping hardware. These items are commonly used on aircraft engines and associated hardware but may be used elsewhere.Military and commercial customer requirements for the prevention of damage or contamination to stored parts are generally limited to the generic instructions "all openings should be sufficiently covered to prevent the entrance of dust, dirt, moisture or other foreign contaminants". This recommended practice outlines basic minimum parameters for suggested item construction and usage. Additionally this recommended practice provides instruction on how to apply these closures to various openings.