ISO 20683-1:2016适用于与最大坡道质量超过50000 kg（110 000 lb）的主线民用运输飞机的前起落架连接的无拖杆飞机牵引车（TLTV）。ISO 20683-2规定了具有较低最大坡道质量的区域运输飞机的要求。本标准不适用于发布日期之前制造的TLTV。 它规定了一般设计要求、测试和评估要求、维护、校准、文件记录、记录、追踪和责任要求，以确保牵引车产生的载荷不会超过前起落架或其转向系统的设计载荷，或降低前起落架经认证的安全寿命极限，或在飞机后推和/或闸门重新定位或维修牵引操作期间引发稳定性问题。 本文件规定了仅用于飞机后推和登机口重新定位或维修牵引的无拖车（TLTV）的要求和程序。其目的不在于允许调度（运行）牵引（见第3条）。由于速度和额外的乘客、货物和燃料负载，调度牵引对前起落架和飞机结构施加了更大的负载。 本文件不适用于与飞机主起落架连接的无牵引杆牵引车。

ISO 20683-1:2016 is applicable to towbarless aircraft towing vehicles (TLTVs) interfacing with the nose landing gear of main line civil transport aircraft with a maximum ramp mass over 50 000 kg (110 000 lb). The requirements for regional transport aircraft with a lower maximum ramp mass are specified in ISO 20683？2. It is not applicable to TLTVs which were manufactured before its date of publication. It specifies general design requirements, testing and evaluation requirements, maintenance, calibration, documentation, records, tracing and accountability requirements in order to ensure that the loads induced by the tow vehicle will not exceed the design loads of the nose gear or its steering system, or reduce the certified safe life limit of the nose gear, or induce a stability problem during aircraft pushback and/or gate relocation or maintenance towing operations. This document specifies requirements and procedures for towbarless tow vehicles (TLTVs) intended for aircraft pushback and gate relocation or maintenance towing only. It is not intended to allow for dispatch (operational) towing (see Clause 3). Dispatch towing imposes greater loads on nose gears and aircraft structure due to the combination of speed and additional passenger, cargo, and fuel loads. This document does not apply to towbarless towing vehicles interfacing with aircraft main landing gear.