给出了自动推进乘客登机楼梯的功能、性能和安全要求，该楼梯用于进入国际民用航空运输中常用的所有飞机类型的客舱，其客舱门槛高度等于或超过2.54 m。

Gives the functional, performance and safety requirements for self-propelled passenger boarding stairs intended for access to the cabin of all aircraft types commonly in service in international civil air transport with a cabin door sill height equal to or exceeding 2,54 m.