本规范旨在为飞机操作员和牵引车制造商提供:与无杆牵引车测试和评估相关的一般设计和操作要求。ARP4852和ARP4853中规定了具体的设计要求。测试和评估要求。这些测试评估的结果将确定牵引车引起的载荷是否会超过前起落架的设计载荷，或是否在飞机制造商的限制范围内，从而不会影响前起落架认证的安全极限。这些测试评估的结果还将确定在使用测试的飞机/牵引车组合进行推进和/或维护牵引操作期间是否可能出现稳定性问题。 本文件规定了仅用于推回和维护牵引的无杆牵引车（TLTV）的一般测试要求和测试评估程序。它不适用于调度（操作）牵引（见2.3中的定义）。由于额外的乘客、货物和燃料负载以及更多的启动、停止和转弯，调度牵引会对前起落架和结构造成更多的疲劳循环。机身制造商可能要求提交测试结果以供评估，或可能提供信息，以允许TLTV制造商或航空公司自行测试或评估无拖车。 参考机身制造商的文件，了解可能与本规范不同的评估要求和详细测试程序。在要求不同的情况下，机身制造商的文件优先于本推荐实践。TLTV制造商可选择准备并向客户或监管机构提供“合规证书”或同等文件，以证明已根据本ARP和/或适用的详细机身制造商文件。 该认证将允许在特定指定机型上使用车辆。证书应根据符合ISO 9000系列或同等标准要求的适当质量控制程序建立。本规范要求所考虑的TLTV应在可使用状态下进行维护和操作。此外，应定期校准车机接口保护系统。ARP5284和ARP5285中定义了该信息。

The purpose of this specification is to provide airplane operators and tow vehicle manufacturers with:General design and operating requirements pertinent to test and evaluation of towbarless tow vehicles. Specific design requirements are provided in ARP4852 and ARP4853.Test and evaluation requirements. The results of these test evaluations will determine if the loads induced by the tow vehicle will exceed the design loads of the nose gear, or are within the aircraft manufacturer’s limits so that they do not affect the certified safe limit of the nose gear. The results of these test evaluations will also determine if a stability problem may occur during pushback and/or maintenance towing operations with the tested airplane/tow vehicle combination.This document specifies general test requirements and a test evaluation procedure for towbarless tow vehicles (TLTV) intended for pushback and maintenance towing only. It is not meant for dispatch (operational) towing (see definitions in 2.3). Dispatch towing imposes more fatigue cycles on nose gears and structure due to additional passenger, cargo, and fuel loads, as well as more starts, stops and turns. Airframe manufacturers may require submittal of test results for evaluation or may provide information which allows TLTV manufacturers or airlines to self-test or evaluate the towbarless tow vehicles themselves. Refer to the airframe manufacturer’s documentation for evaluation requirements and detailed testing procedures that may be different than contained in this specification. In the event of a difference in requirements, airframe manufacturer documentation takes precedence over this Recommended Practice.TLTV manufacturers may elect to prepare and provide customers or regulatory agencies with a “Certificate of Compliance” or equivalent documentation as evidence that successful testing and evaluation of a specific tow vehicle/airplane type combination has been completed in accordance with this ARP and/or the applicable detailed airframe manufacturer’s documentation. This certification will allow usage of the vehicle on specifically designated airplane model types. The certificate should be established under an appropriate quality control program meeting the requirements of ISO 9000 Series or equivalent.This specification requires that the TLTVs under consideration be maintained and operated in a serviceable condition. In addition, the vehicle to airplane interface protection system shall be calibrated periodically. This information is defined in ARP5284 and ARP5285.