ISO 9667:2017
(Main)Aircraft ground support equipment — Tow bars
Aircraft ground support equipment — Tow bars
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.
Équipement au sol pour aéronefs — Barres de tractage
General Information
Relations
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 9667
Third edition
2017-07
Aircraft ground support equipment —
Tow bars
Équipement au sol pour aéronefs — Barres de tractage
Reference number
ISO 9667:2017(E)
©
ISO 2017
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ISO 9667:2017(E)
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© ISO 2017, Published in Switzerland
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ii © ISO 2017 – All rights reserved
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ISO 9667:2017(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Aircraft mass categories . 2
5 Tow bar general requirements . 2
6 Aircraft connection . 2
6.1 Dimension of tow bar connection to aircraft . 2
6.2 Aircraft interface requirements . . 2
6.3 Aircraft protective provisions . 3
6.3.1 General requirements . 3
6.3.2 Shear pins . 3
7 Tractor connection . 4
8 Tow bar undercarriage . 5
9 Markings . 6
10 Options . 6
11 Documentation, tests and analysis . 7
Bibliography . 8
© ISO 2017 – All rights reserved iii
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ISO 9667:2017(E)
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: w w w . i s o .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.
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ISO 9667:2017(E)
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.
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INTERNATIONAL STANDARD ISO 9667:2017(E)
Aircraft ground support equipment — Tow bars
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.
Key
1 tractor connection
2 aircraft connection
3 tow bar body
4 tow bar undercarriage
Figure 1 — Tow bar
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 8267-1, Aircraft — Tow bar attachment fittings interface requirements — Part 1: Main line aircraft
ISO 8267-2, Aircraft — Tow bar attachment fittings interface requirements — Part 2: Regional aircraft
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases
...
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