本SAE航空航天标准（AS）提供了供多层运输类飞机乘客使用的机上楼梯的设计标准。它不适用于专为船员、额外人员或维修人员设计的楼梯。此外，本AS不适用于ARP836规定的用于登机乘客的机身安装或外部楼梯。本AS的目的是帮助飞机制造商设计楼梯，在正常操作过程中，使用者不太可能在楼梯上遇到失误或摔倒，紧急疏散时，楼梯上的移动将尽可能有效。

This SAE Aerospace Standard (AS) provides design criteria for onboard stairways intended for use by passengers aboard multi-deck transport category airplanes. It is not intended for stairways designed for use only by crewmembers, supernumeries, or maintenance personnel. Additionally, this AS does not apply to fuselage mounted or external stairways used for boarding passengers, which are covered by ARP836.The purpose of this AS is to assist airplane manufacturers in designing stairways on which users will be less likely to experience a misstep or fall during normal operations and on which movement during an emergency evacuation will be as efficient as is possible.