本文件规定了未来民用宽体专用货运飞机设备的最低性能、设计和测试要求，该设备被确定为主甲板单元化货物装卸和约束系统。它进一步概述了货舱和封套的一般设计要求。

This document specifies minimum performance, design and test requirements for future civil wide-body dedicated freighter aircraft equipment identified as a main deck unitized cargo handling and restraint system. It further outlines the general design requirements for the cargo compartment and envelope.