ISO 1464:2018规定了飞机主要顶升点下方的最小净空间，以容纳三脚架千斤顶，从而确保千斤顶与相邻飞机结构之间有足够的间隙。 ISO 1464:2018并非旨在全面定义所有千斤顶间隙尺寸。在间隙至关重要的情况下，它仅用作设计辅助。使用实际千斤顶尺寸确定最终临界间隙。

ISO 1464:2018 specifies the minimum clear space to be provided beneath the aircraft main jacking points, in order to accommodate tripod jacks and thus ensure adequate clearance between the jacks and the adjacent aircraft structure. ISO 1464:2018 is not intended to define fully all jack clearance dimensions. In situations where clearances are critical, it is used as a design aid only. Final critical clearances are established by using actual jack dimensions.