本文件已于2011年4月被宣布“取消”。通过这一行动，本文件将保留在航空航天标准索引的数字部分。本规范规定了飞机维修用三向组合（阶梯、直线和延伸）铝梯的制造和验收要求。

This document has been declared "CANCELLED" as of April 2011. By this action, this document will remain listed in the Numercial Section of the Aerospace Standards Index.This specification establishes the requirements for the manufacture and acceptance of three-way combination (step, straight and extension) aluminum ladders for aircraft maintenance use.