National foreword

This British Standard is the UK implementation of ISO 9667:2017. It supersedes BS ISO 9667:2016, which is withdrawn.

The UK participation in its preparation was entrusted to Technical Committee ACE/57, Air cargo and ground support equipment.

A list of organizations represented on this committee can be obtained on request to its secretary.

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2017.

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISO's adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 9, Air cargo and ground equipment.

This third edition cancels and replaces the second edition (ISO 9667:2016), which has been technically revised.

The main changes compared to the previous edition are as follows:

a complete revision of all clauses has been made to harmonize with SAE ARP1915;
figures have been updated and minor editorial modifications have been made; and
Clauses 9, 10 and 11 have been added.

Introduction

This document specifies the functional requirements defined by the manufacturers for the design of aircraft tow bars.

Throughout this document, the minimum essential criteria are identified by use of the key word “shall”. Recommended criteria are identified by use of the key word “should” and, while not mandatory, are considered to be of primary importance in providing safe, economical and usable aircraft tow bars. Deviation from recommended criteria should only occur after careful consideration and thorough service evaluation have shown alternate methods to provide an equivalent level of safety.

1 Scope

This document 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 this document.

The purpose of this document 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.

2 Normative references

3 Terms and definitions

4 Aircraft mass categories

5 Tow bar general requirements

5.1

5.2

5.3

6 Aircraft connection

6.1 Dimension of tow bar connection to aircraft

6.2 Aircraft interface requirements

6.3 Aircraft protective provisions

7 Tractor connection

8 Tow bar undercarriage

9 Markings

9.1

9.2

9.3

10 Options

11 Documentation, tests and analysis

11.1

11.2

Bibliography

BS ISO 9667:2017

Aircraft ground support equipment. Tow bars

Current

Published:

31 Aug 2017