1、BRITISH STANDARD AEROSPACE SERIES BS G 262:1998 ISO/TR 224:1998 Aircraft Declaration of design and performance for aircraft equipment Standard form ICS 49.020BSG262:1998 This British Standard, having been prepared under the directionof the Engineering SectorBoard, was published underthe authority of
2、 the Standards Board and comes intoeffect on 15 May 1998 BSI 05-1999 ISBN 0 580 29850 7 National foreword This British Standard reproduces verbatim ISO/TR224:1998 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee ACE/6, Aerosp
3、ace avionic, electrical and fibre optic technology, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related int
4、ernational and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be fou
5、nd in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standard
6、s are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theISO title page, page ii, pages1 to5 and a back cover. This
7、standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSG262:1998 BSI 05-1999 i Contents Page National foreword Inside front cover For
8、eword ii Introduction 1 1 Scope 1 2 Normative References 1 3 Specifications relating to the standard form 1 Annex A (normative) Standard form for the declaration of design and performance (DDP) 2 Table A.1 Required declarations 5ii blankBSG262:1998 ii BSI 05-1999 Foreword ISO (the International Orga
9、nization 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 establis
10、hed 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
11、. The main task of a technical committee is to prepare International Standards, but in exceptional circumstances a technical committee may propose the publication of a Technical Report of one of the following types: type 1: when the required support cannot be obtained for the publication of an Inter
12、national Standard, despite repeated efforts; type 2: when the subject is still under technical development or where for any other reason there is the future but not immediate possibility of an agreement on an International Standard; type 3: when a technical committee has collected data of a differen
13、t kind from that which is normally published as an International Standard (“state of the art”, for example). Technical reports of types1 and2 are subject to review within three years of publication, to decide whether they can be transformed into International Standards. Technical reports of type3 do
14、 not necessarily have to be reviewed until the data they provide are considered to be no longer valid or useful. Technical Report ISO/TR224, which is a Technical Report of type1, was prepared by Technical Committee ISO/TC20, Aircraft and space vehicles. Annex A forms an integral part of this Technic
15、al Report. Descriptors: Aircraft, aircraft equipment, technical notices, design, performance, manufacturers declaration, forms (paper), layout.BSG262:1998 BSI 05-1999 1 Introduction In 1990, ISO/TC20 started working on a revision of ISO/DIS224, Aircraft Declaration of design and performance for airc
16、raft equipment Standard form. In 1994, ISO/TC20s resolution620 judged it appropriate to publish the results of the work as a Technical Report because of some comments outlining the difficulties of its application which may conflict with JAR-TSO. However, if an approval authority, an aircraft manufac
17、turer, or an operator asks for information on the design and performances of an equipment item, any applicable restrictions, and its degree of compliance with ISO7137 or with any other standard to be specified, we recommend that the equipment designer use this standard declaration form. The results
18、of official certification procedures in member countries cannot be judged in advance from the indications given in the declaration of design and performance. 1 Scope This Technical Report specifies the standard form to be used for a declaration of design and performance (DDP) for aircraft equipment.
19、 A DDP is the commitment of a manufacturer to deliver a product complying with the defined dimensions and performances, based on qualification tests carried out by the NSO (National Surveillance Organization), a major user or by the manufacturer himself. A DDP is not a compulsory procedure, it remai
20、ns optional; its purpose is to avoid repeated qualification tests for each use. For a specific program, the DDP can be certified for the aircraft manufacturer or the NSO. This means that the commitments of the manufacturer were met when the aircraft was certified. The DDP is intended for components
21、and equipment which do not relate to any national or international or aircraft manufacturer specification. If a normative document giving a full definition of a product exists, the dimensions, performances and qualification of the product in question must be in accordance with that document. 2 Norma
22、tive references The following standards contain provisions which, through reference in this text, constitute provisions of this Technical Report. At the time of the publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on the Internati
23、onal Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 2669:1995, Environmental tests for aircraft equipment Steady-state acceleration
24、. ISO 2671:1982, Environmental tests for aircraft equipment Acoustic vibration. ISO 2678:1985, Environmental tests for aircraft equipment Insulation resistance and high voltage tests for electrical equipment. ISO 2685:, Aircraft Environmental test procedure for airborne equipment Resistance to fire
25、in designated fire zone 1) . ISO 7137:1995, Aircraft Environmental conditions and test procedures for airborne equipment. 3 Specifications relating to the standard form 3.1 The content of a DDP for aircraft equipment shall be in accordance with the requirements ofAnnex A. The declaration shall compl
26、y with the headings and be in order given inAnnex A, using additional spacing if required. Where a heading is not appropriate, insert “not applicable”. Where test are specified but have not been carried out, insert “not tested”. 3.2 Each page of the declaration shall be numbered as follows: Page 1 o
27、f pages Page 2 of pages etc. 3.3 Approving authorities may be a) aircraft or systems manufacturers; or b) national/governmental agencies, according to the laws and regulations in force in each country considered, defining the meaning of the stamp on the declaration; c) or both. 1) To be published. (
28、Revision of ISO2685:1992)BSG262:1998 2 BSI 05-1999 Annex A (normative) Standard form for declaration of design and performance (DDP)BSG262:1998 BSI 05-1999 3 Performance The limits of declared performance and those implied by the declarations below are not intended to be absolute, but are intended t
29、o indicate the performance which has been shown by tests. Declare the equipment performance limits under the appropriate headings (i.e.electrical and mechanical input and output characteristics which are particular to the equipment, times and duration of cycles, accuracy, etc.). Declarations State h
30、ere those declarations required by the relevant sections of ISO7137, or, if necesary, by other standards to be specified, relating to environmental and service conditions for aircraft equipment as stated inTable A.1, and also any additional declarations required by relevant equipment specifications.
31、 Limitations Limitations are the minimum life or useful service between equipment overhaul (based on test results and/or operational experience), as well as any standard tests necessary to satisfy safety requirements. The equipment designer shall state any known limitations of which the user should
32、be aware which are not specifically covered by the above-mentioned declarations. Departures from specification The equipment designer shall list any departures from the requirements of ISO7137, or of other applicable standards to be specified, as well as from the design specifications which the equi
33、pment must meet. Manufacturers statement I hereby certify the information contained in this declaration of design and performance (DDP) is accurate.(manufacturers name) declines all responsibility regarding the satisfactory operation of equipment used beyond the above-declared conditions without pri
34、or agreement.BSG262:1998 4 BSI 05-1999BSG262:1998 BSI 05-1999 5 Table A.1 Required declarations Test procedure Information (range, class, category, etc.) Test report references or data Reference number of test procedure in ISO7137 a Other relevant specification (specification no.) Relevant individua
35、l equipment specification (if appropriate) Temperature and altitude 1.1 Temperature variation 1.2 Humidity 1.3 Icing 1.4 Waterproofness 1.5 Fluid resistance 1.6 Sand and dust 1.7 Fungus resistance 1.8 Salt spray 1.9 Operational shocks and crash safety 2.1 Vibration 2.2 Steady-state acceleration 2.3
36、ISO 2669 Acoustic vibration 2.4 ISO 2671 Magnetic effect 3.1 Power input 3.2 Voltage spike 3.3 Audio frequency conducted susceptibility (power inputs) 3.4 Induced signal susceptibility 3.5 Radio frequency susceptibility (radiated and conducted) 3.6 Emission of non-essential radio frequency energy 3.
37、7 Lightning induced transient susceptibility 3.8 Insulation resistance and high voltage 3.9 ISO 2678 Direct lightning effects 3.10 Explosion proofness 4.1 Fire resistance 4.2 ISO 2685 a If an alternative standard is specified, then: delete the reference number of test procedure of ISO7137; mention t
38、he applicable clause of the alternative standard in column “other specification”.BS G 262:1998 ISO/TR 224:1998 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards
39、 in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our
40、 products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this BritishStandard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel:02089969000. Fax:02089967400. BSI offers mem
41、bers an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel:02089969001. Fax:02089967001. In
42、response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as BritishStandards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards thr
43、ough its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel:02089967111. Fax:02089967048. Subscribing members of BSI are kept up to date with stan
44、dards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel:02089967002. Fax:02089967001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the
45、publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written
46、 permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel:02089967070.
