1、 ISO 2016Aircraft ground support equipment Tow barsquipement au sol pour aronefs Barres de tractageINTERNATIONAL STANDARDISO9667Second edition2016-01-15Reference numberISO 9667:2016(E)ISO 9667:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll ri
2、ghts reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from
3、either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgISO 9667:2016(E)Foreword iv1 Scope . 12 Normative references 13 Ai
4、rcraft mass categories . 14 Tow bar general requirements 25 Aircraft connection 25.1 Dimension of tow bar connection to aircraft 25.2 Aircraft interface requirements 25.3 Aircraft protective provisions 25.3.1 General requirements 25.3.2 Shear pins 35.3.3 Marking 46 Tractor connection . 47 Tow bar un
5、dercarriage 5 ISO 2016 All rights reserved iiiContents PageISO 9667:2016(E)ForewordISO (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 te
6、chnical 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 close
7、ly 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 ne
8、eded 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
9、 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
10、 this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barrier
11、s to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 9, Air cargo and ground equipment.This second edition cancels and replaces the first edition (ISO 9667:1998), which has b
12、een technically revised.iv ISO 2016 All rights reservedINTERNATIONAL STANDARD ISO 9667:2016(E)Aircraft ground support equipment Tow bars1 ScopeThis International Standard specifies dimensional and physical requirements of tow bar connections to tractor and aircraft (see Figure 1). It is applicable t
13、o any new type of commercial-transport-category aircraft tow bar designed or built after publication of this International Standard.The purpose of this International Standard is to standardize tow bar attachments to airplane and tractor according to the mass category of the towed aircraft, so that o
14、ne 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 (all parts).1234Key1 tractor connection2 aircraft connection3 tow bar body4 tow bar undercarriageFigure 1 Tow bar2 Normative referencesThe
15、following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. 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,
16、Aircraft Tow bar attachment fittings interface requirements Part 1: Main line aircraftISO 8267-2, Aircraft Tow bar attachment fittings interface requirements Part 2: Regional aircraftEN 12312-7:2005+A1:2009, Aircraft ground support equipment Specific requirements Part 7: Aircraft movement equipment3
17、 Aircraft mass categoriesThe aircraft mass categories shall be in accordance with ISO 8267 (all parts). ISO 2016 All rights reserved 1ISO 9667:2016(E)A given tow bar type may be used on several aircraft types within the same ISO 8267-1 or ISO 8267-2, as appropriate, weight category, provided their n
18、ose landing gear towing interface meets the ISO 8267-1 or ISO 8267-2 requirements for that category, and the protective provisions are chosen to meet or exceed the minimum requirement for each aircraft.4 Tow bar general requirementsAs a safety feature the tow bar (body or head holding section or ret
19、aining feature) shall be designed to sustain at least 150 % of the protective device(s) functioning point or as otherwise specified by the customer.The tow bar, when unladen, shall be both towable and stable at speeds up to 25 km/h (15 mph). The maximum towing speed shall be suitably placarded.For u
20、se in the EU and EFTA, the tow bar shall, in addition, meet the Health and Safety requirements contained in EN 12312-7:2005, 5.9.5 Aircraft connection5.1 Dimension of tow bar connection to aircraftThe standard configuration of the tow bar connection to the aircraft shall be compatible with the horiz
21、ontal pin of the aircraft tow bar attachment fitting as specified in ISO 8267 (all parts).NOTE Several common aircraft types designed prior to publication of ISO 8267 (all parts) still use non-standard nose gear tow bar attachment fittings. Refer to the aircraft type manufacturers documentation for
22、interface requirements.5.2 Aircraft interface requirementsThe design of the tow bar aircraft connection device that clamps to the horizontal cylindrical pin of the aircraft shall grip the pin uniformly over 96 % to 98 % of its length, shall be designed to eliminate inadvertent disengagement of the t
23、ow bar during towing or pushing operations, shall be designed to provide adequate clearance during engagement and disengagement of the tow bar from the aircraft connection allowable space envelope for clearance is specified in ISO 8267 (all parts), and should be adjustable to provide pressure on the
24、 pin when locked.NOTE Several common aircraft types designed prior to publication of ISO 8267 (all parts) still use non-standard nose gear tow bar attachment fittings. Refer to the aircraft type manufacturers Aircraft Characteristics for Airport Planning Manual for interface requirements.5.3 Aircraf
25、t protective provisions5.3.1 General requirementsThe tow bar should be so constructed as to prevent any item from becoming a Foreign Object Damage (FOD) hazard, e.g. broken parts of the shear pin and any bushes always remain captive to prevent aircraft engine ingress.2 ISO 2016 All rights reservedIS
26、O 9667:2016(E)The tow bar shall incorporate a device or devices, such as for example shear pins (typically two, respectively for push/pull and torsion protection), to protect the aircraft from damage due to towing which shall relieve fore/aft and torsional towing forces applied to the aircraft nose
27、gear through the tow bar which exceed the maximum force recommendations of the aircraft manufacturer by means of a shock absorbing device that is designed to function at values below tow bar design values, have an energy-absorbing device in order to limit loads induced in the landing gear that shall
28、 be designed to function at values beyond tow bar design values, simultaneously alert the tow tractor operator, audibly, visually or both, that a device has been actuated, be replaceable or repairable with a minimum of effort, and transfer overload to a retaining feature preventing separation and th
29、erefore loss of control of the aircraft from the towing vehicle. The retaining feature shall allow free rotation on 90 about aircraft centreline at the retaining fastener. The retaining feature should be designed so that the towing forces do not exceed the aircraft type manufacturers maximum force r
30、ecommendations. See Figure 2 example.5.3.2 Shear pinsIf shear pins are used as a protective device, they shall discourage hazardous replacement and encourage the exclusive use of manufacturers original parts and be clearly identified for their specific usage, shear at or below the nominal force spec
31、ified by the aircraft manufacturer(s), have a functioning point within a relative tolerance of (+0/-10 %), and have a specific predetermined shear plane, whether provided with or without hardened bushings (see Figure 2). ISO 2016 All rights reserved 3ISO 9667:2016(E)123456879Key1 shear pin2 head ret
32、ention plates3 head4 preset shear plane5 hardened steel bushings6 retaining clip7 sliding fit8 head retention bolt9 self-locking nutNOTE Do not clamp up assembly.Figure 2 Typical shear pin/bushing configuration5.3.3 MarkingThe tow bar shall be clearly and indelibly marked to identify the allowable t
33、ype(s) of aircraft and maximum towing force.6 Tractor connectionThe attachment on the tow bar for connection to the tractor shall be as shown in Figure 3 for all mass categories as specified in Clause 3, and shall contain a rotating tow bar eye.4 ISO 2016 All rights reservedISO 9667:2016(E)Dimension
34、s in millimetres (values in inches in parentheses)Figure 3 Dimensions of tow bar eye (tractor connection)7 Tow bar undercarriageThe tow bar shall be equipped with a wheeled undercarriage to support it while being moved unladen and to serve as height adjustment device while attaching the end connecti
35、ons.The undercarriage shall be extendable by use of a mechanical device, or a hand pump and hydraulic cylinder. It shall retract mechanically or by hydraulic pressure release.Height adjustment shall cover the range necessary for connecting to and towing all aircraft types the tow bar is intended for
36、, with the wheels clearing ground by a minimum of 50 mm (2 in) during towing.Longitudinal adjustment of the undercarriage shall allow centre of gravity adjustments in the event of, e.g. changing the tow bar head or installing a Ground Power Unit cable. Where design is such that the tow bar is attach
37、ed below the aircraft towing spool (see Figure 4), the tow bar centre of gravity shall ensure it is heavier at the tractor end by no more than 12 kg (25 lb). Where design is such that the tow bar is attached above the aircraft towing spool (see Figure 5), the tow bar centre of gravity shall ensure it is heavier at the aircraft end by no more than 12 kg (25 lb).Figure 4 Attachment below aircraft spoolFigure 5 Attachment above aircraft spool ISO 2016 All rights reserved 5ISO 9667:2016(E) ISO 2016 All rights reservedICS 49.100Price based on 5 pages
