BS-G-262-1998 ISO-TR-224-1998.pdf

BRITISH STANDARD AEROSPACE SERIES BS G 262:1998 ISO/TR 224:1998 Aircraft Declaration of design and performance for aircraft equipment Standard form ICS 49.020 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 262:1998 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 May 1998 © BSI 05-1999 ISBN 0 580 29850 7 National foreword This British Standard reproduces verbatim ISO/TR 224:1998 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee ACE/6, Aerospace 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 international 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 found 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 Standards 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, the ISO title page, page ii, pages 1 to 5 and a back cover. This 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.DateComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 262:1998 © BSI 05-1999i Contents Page National forewordInside front cover Forewordii Introduction1 1Scope1 2Normative References1 3Specifications relating to the standard form1 Annex A (normative) Standard form for the declaration of design and performance (DDP)2 Table A.1 Required declarations5 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 262:1998 ii © BSI 05-1999 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 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 International 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 different kind from that which is normally published as an International Standard (“state of the art”, for example). Technical reports of types 1 and 2 are subject to review within three years of publication, to decide whether they can be transformed into International Standards. Technical reports of type 3 do not necessarily have to be reviewed until the data they provide are considered to be no longer valid or useful. Technical Report ISO/TR 224, which is a Technical Report of type 1, was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles. Annex A forms an integral part of this Technical Report. Descriptors: Aircraft, aircraft equipment, technical notices, design, performance, manufacturers declaration, forms (paper), layout. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 262:1998 © BSI 05-19991 Introduction In 1990, ISO/TC 20 started working on a revision of ISO/DIS 224, Aircraft Declaration of design and performance for aircraft equipment Standard form. In 1994, ISO/TC 20s resolution 620 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 manufacturer, or an operator asks for information on the design and performances of an equipment item, any applicable restrictions, and its degree of compliance with ISO 7137 or with any other standard to be specified, we recommend that the equipment designer use this standard declaration form. The results 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. 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 remains 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 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 Normative 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 International 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. 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 in designated fire zone1). 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 of Annex A. The declaration shall comply with the headings and be in order given in Annex 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 of 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. (Revision of ISO 2685:1992) Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 262:1998 2 © BSI 05-1999 Annex A (normative) Standard form for declaration of design and performance (DDP) Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 262:1998 © BSI 05-19993 Performance The limits of declared performance and those implied by the declarations below are not intended to be absolute, but are intended to 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 here those declarations required by the relevant sections of ISO 7137, or, if necesary, by other standards to be specified, relating to environmental and service conditions for aircraft equipment as stated in Table A.1, and also any additional declarations required by relevant equipment specifications. 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 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 ISO 7137, or of other applicable standards to be specified, as well as from the design specifications which the equipment 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 prior agreement. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 262:1998 4 © BSI 05-1999 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 262:1998 © BSI 05-19995 Table A.1 Required declarations Test procedure Information (range, class, category, etc.) Test report references or data Reference number of test procedure in ISO 7137a Other relevant specification (specification no.) Relevant individual equipment specification (if appropriate) Temperature and altitude1.1 Temperature variation1.2 Humidity1.3 Icing1.4 Waterproofness1.5 Fluid resistance1.6 Sand and dust1.7 Fungus resistance1.8 Salt spray1.9 Operational shocks and crash safety 2.1 Vibration2.2 Steady-state acceleration2.3ISO 2669 Acoustic vibration2.4ISO 2671 Magnetic effect3.1 Power input3.2 Voltage spike3.3 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 3.7 Lightning induced transient susceptibility 3.8 Insulation resistance and high voltage 3.9ISO 2678 Direct lightning effects3.10 Explosion proofness4.1 Fire resistance4.2ISO 2685 a If an alternative standard is specified, then: delete the reference number of test procedure of ISO 7137; mention the applicable clause of the alternative standard in column “other specification”. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:51:18 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 262:1998 ISO/TR 224:1998 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. 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