ISO 9667:2017规定了拖拉机和飞机牵引杆连接的尺寸和物理要求（见图1）。适用于ISO 9667:2017发布后设计或制造的任何新型商用运输类飞机牵引杆。 ISO 9667:2017的目的是根据被牵引飞机的质量类别，对飞机和拖拉机的牵引杆附件进行标准化，以便一个具有不同剪切水平的牵引杆头可用于同一质量类别内的所有飞机，并按照ISO 8267制造。

ISO 9667:2017 specifies dimensional and physical requirements of tow bar connections to tractor and aircraft (see Figure 1). It is applicable to any new type of commercial transport category aircraft tow bar designed or built after publication of ISO 9667:2017. The purpose of ISO 9667:2017 is to standardize tow bar attachments to airplane and tractor according to the mass category of the towed aircraft, so that one tow bar head with different shear levels can be used for all aircraft that are within the same mass category and are manufactured in compliance with ISO 8267.