1、BSI Standards PublicationBS EN 4726:2015Aerospace series Acceptanceof the cosmetic variations inappearance of aircraft cabinpartsBS EN 4726:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 4726:2015. The UK participation in its preparation was entrusted to T
2、echnicalCommittee ACE/1, International and European Aerospace Policy and Processes.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
3、correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 83233 8 ICS 49.095 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and St
4、rategy Committee on 30 September 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 4726:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4726 September 2015 ICS 49.095 English Version Aerospace series - Acceptance of the cosmetic variations in appearance of
5、 aircraft cabin parts Srie arospatiale - Acceptation des variations esthtiques de laspect des lments de cabine davionLuft- und Raumfahrt - Akzeptanz von kosmetischen Qualittsabweichungen bei Flugzeug-KabinenbauteilenThis European Standard was approved by CEN on 10 January 2015. CEN members are bound
6、 to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN
7、-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre ha
8、s the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Lu
9、xembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brus
10、sels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4726:2015 EBS EN 4726:2015EN 4726:2015 (E) 2 Contents Page European foreword . 5 1 Scope 6 2 Normative references 6 3 Abbreviations . 6 4 Definitions of cosmetic defects, in
11、spection zones and criteria 7 4.1 Simplified definition of a cosmetic defect 7 4.2 Zonal type definition for installed parts . 7 4.2.1 Zone A 7 4.2.2 Zone B 8 4.2.3 Zone C 8 4.3 Classification of surfaces to be inspected . 8 4.4 Split lines, definition, cutting and placement 13 4.5 Time limits and p
12、art appraisal 14 4.6 Distance from the test specimen 14 4.6.1 Distance at FAI-, source- and incoming inspection (general ruling) 14 4.6.2 Distance at FAL, final inspection and customer presentation . 14 4.7 Illumination . 14 4.7.1 Additional light sources . 15 4.7.2 Surfaces 15 4.7.3 Production mast
13、ers . 18 5 Evaluation tables and defect size assessment . 18 6 Inspection template to ascertain defect sizes 21 Annex A (normative) Unacceptable characteristics of findings . 22 A.1 General . 22 A.2 Perforation, puncture or penetration. 22 A.3 Cuts, cracks, scratches, pits tears and rips (any medium
14、) 22 A.4 Adherence, de-lamination, loose / flimsy items . 24 A.5 Stains 25 A.6 Excess adhesive (glue) and sealant . 25 A.7 Decor overlapping / joints 26 A.8 Differences in decor 27 A.9 Pattern distortion through application . 27 A.10 Texture loss 27 A.11 Misalignment whether pattern, material, part
15、or point 27 A.12 Dents and dings . 30 A.13 Decor trimming (cut-outs) 30 A.14 Telegraphing 31 A.15 Changes of colours / shades . 31 A.16 Chafing marks 32 A.17 Brushing direction . 34 A.18 Creases on bends, rippling 34 A.19 Sharp edges 34 A.20 Protrusions and sinking 34 BS EN 4726:2015EN 4726:2015 (E)
16、 3 A.21 Welds . 34 A.22 Chrome and galvanization . 34 A.23 Gaps . 35 A.24 Manufacturing process tooling marks 35 A.25 Seams 35 A.26 Textiles and leather, colouring and surface texture 35 A.27 “Soft furnishing“ 36 A.28 Screws . 36 A.29 Inserts . 38 A.30 Foam seals and flexible seals 40 A.31 Varnish,
17、clear lacquer finishes 40 A.32 Placards, signs, labels and engravings 40 A.33 Light leakage 40 A.34 Transparent sections of components 40 A.35 Retouching / reworks . 41 Tables Table 1 Evaluation Table valid for parts up to: 0,25 m218 Table 2 Evaluation table valid for parts up to: 0,5 m219 Table 3 E
18、valuation table valid for parts larger than: 0,5 m220 Table 4 Evaluation table valid for broad but not long defects, e. g. scratches, low marks, over spraying, hairs etc. . 20 Figures Figure 1 Cabin lining 9 Figure 2 Pax seat 10 Figure 3 CAS seat 11 Figure 4 Cabin monument 11 Figure 5 Galley 12 Figu
19、re 6 Example for other cabin parts . 13 Figure 7 Example for inspection template to ascertain defect sizes 21 Figure A.1 Example of a perforation finding 22 Figure A.2 Example of a crack finding 23 Figure A.3 Example of a cut finding . 23 Figure A.4 Example of a paint defect finding . 23 Figure A.5
20、Example of a scratch finding 24 Figure A.6 Example of a scratch finding 24 Figure A.7 Example of a poor adhesion finding 25 Figure A.8 Example of a stain finding . 25 BS EN 4726:2015EN 4726:2015 (E) 4 Figure A.9 Example of non-acceptable finding . 26 Figure A.10 Example of decor misalignment finding
21、 . 26 Figure A.11 Example of uneven split line finding 26 Figure A.12 Example of poor fit split line finding 27 Figure A.13 Example of an alignment finding . 28 Figure A.14 Example of a misalignment finding 28 Figure A.15 Example of an alignment finding . 29 Figure A.16 Example of an alignment findi
22、ng . 29 Figure A.17 Example of a dent finding . 30 Figure A.18 Example of an uneven edge finding 30 Figure A.19 Example of a poor trimming finding 31 Figure A.20 Example of a discolouration finding. 31 Figure A.21 Example of a chafing finding . 32 Figure A.22 Example of a chafing finding . 32 Figure
23、 A.23 Example of a chafing finding . 32 Figure A.24 Example of an indentation finding 33 Figure A.25 Example of a cut finding 33 Figure A.26 Example of a hole finding . 33 Figure A.27 Example of a protrusion finding 34 Figure A.28 Example of a stain finding 36 Figure A.29 Example of a disfigurement
24、finding 36 Figure A.30 Example of a ground screw finding 37 Figure A.31 Example of a countersink finding 37 Figure A.32 Example of a missing screw finding 38 Figure A.33 Example of a bad hole finding . 38 Figure A.34 Example of a blocked insert finding . 39 Figure A.35 Example of an excessive glue f
25、inding . 39 Figure A.36 Example of a not de-burred insert finding . 39 Figure A.37 Example of a blistering finding 40 Figure A.38 Example of a thin layer finding 41 BS EN 4726:2015EN 4726:2015 (E) 5 European foreword This document (EN 4726:2015) has been prepared by the Aerospace and Defence Industr
26、ies Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to
27、CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2016, and conflicting national standards shall be withdrawn at the latest by March 2016. Attention is drawn to the possibility that some
28、of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implem
29、ent this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
30、Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 4726:2015EN 4726:2015 (E) 6 1 Scope This standard defines surfaces on visible components in the aircraft cabin. Surfaces will be considered under the aspects of technical feasibility of the industrial design. This s
31、tandard is a guideline between airlines, supplier and OEMs with regard to cosmetic issues. This document aims to: a) Provide the supplier with quality criteria, which need to be met during the production, testing- and quality-inspection-process, b) Guide airline-, OEM- and supplier-quality assurance
32、 with a description of cosmetic standards for following inspections: Supplier internal QA inspection; First article inspection; Source inspection; Incoming inspection; Final assembly line cabin inspection. 2 Normative references The following documents, in whole or in part, are normatively reference
33、d 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. EN 12464-1, Light and lighting Lighting of work places Part 1: Indoor work pla
34、ces EN ISO 2813, Paints and varnishes Determination of specular gloss of non-metallic paint films at 20, 60 and 85 EN ISO 11664-1, Colorimetry Part 1: CIE standard colorimetric observers EN ISO 11664-2, Colorimetry Part 2: CIE standard observers EN ISO 11664-4, Colorimetry Part 4: CIE 1976 L*a*b* Co
35、lour space EN ISO 11664-5, Colorimetry Part 5: CIE 1976 L*u*v* Colour space and u, v uniform chromaticity scale diagram 3 Abbreviations For the purposes of this document, the following abbreviations and definitions apply. A/C aircraft CDR critical design review 3D three dimensional BS EN 4726:2015EN
36、 4726:2015 (E) 7 CAS cabin attendant seat e.g. for example FAI first article inspection FAL final assembly line HTPT hydro transfer printing technology ICS Industrial design colour specification NTF non-textile floor OEM original equipment manufacturer Pax passenger PTS purchaser technical specifica
37、tion PVF polyvinyl fluoride QA quality assurance QC quality control TTL taxi, take-off and landing SU Service unit 4 Definitions of cosmetic defects, inspection zones and criteria 4.1 Simplified definition of a cosmetic defect Cosmetic defects are deviations from the standard or customized specifica
38、tions/definitions if they are distinct without additional illumination and/or mirror and according to the defined criterias within this standard. The defects listed encompass any process relevant material. Pick-ups raised by OEM which are disputed between both parties (OEM and supplier) are subject
39、to be finally decided by the customer. Any decision has to be documented and to be attached to each individual unit. Samples have to be supplied by the supplier and/or the customer to the OEM in order to validate the inspection. 4.2 Zonal type definition for installed parts 4.2.1 Zone A All surfaces
40、 (and edges) directly visible after installation in TTL position from a standing or seating position; specially critically parts regarded by the customer e.g. table top / backs and video arms and as well as areas around logos. BS EN 4726:2015EN 4726:2015 (E) 8 4.2.2 Zone B All surfaces (and edges) n
41、ot directly visible after installation in TTL position from a standing or seating position, which will only be visible after modification of the module, e.g. stowage and stowage doors inside. 4.2.3 Zone C All surfaces (and edges) not visible after installation from a standing or seating position and
42、 which are entirely covered. To view these areas parts needs to be removed, or inspection equipment (e.g. mirror) is needed. Surfaces and edges are only visible while maintenance. 4.3 Classification of surfaces to be inspected The surfaces to be inspected are classified into three zones (A, B, C). C
43、ustomers and suppliers shall document latest at CDR (critical design review) areas that are not visible after installation in the cabin of the aircraft and all other surfaces according to the below zones prerequisites unless otherwise agreed. Figure 1 to Figure 6 show typical areas for the zone clas
44、sification. Areas/parts allowing functional manual or driven movement, thereby becoming fully visible to the passenger or cabin crew, are classified as “A” zones. In some cases the installation position is paramount facets covered up of wall flush items will have an upgraded classification if free s
45、tanding. BS EN 4726:2015EN 4726:2015 (E) 9 Key 1 Side wall stowage lid shown open to view lid inside A zone B zone C zone Figure 1 Cabin lining BS EN 4726:2015EN 4726:2015 (E) 10 Key 1 Stowages insides: B zone 2 Rear walls, if free standing: A zone; if rear side very close to a wall (i.e. masked by
46、wall): B zone 3 Aisle walls, if aisle side: A zone; if window side: B zone 4 Underneath, if “footrest“ returns down and backwards: B zone; if “footrest“ returns up and backwards: A zone; if “footrest“ cannot be viewed incl. during operational movement: C zone 5 Reade side: A zone 6 Stowage insides:
47、B zone 7 Tables top and bottom: A zone 8 LCD monitor: A zone A zone B zone Figure 2 Pax seat BS EN 4726:2015EN 4726:2015 (E) 11 Key 1 Only if flush to a wall: B zone behind headrest, back of seat 2 A zone, under seat pan shroud, underneath of footrest A zone B zone Figure 3 CAS seat Typical monument
48、 with magazine rack and doghouse Typical monument without additional furnishings Key A zone B zone Figure 4 Cabin monument BS EN 4726:2015EN 4726:2015 (E) 12 Key 1 Shelves and cupboards for: fixed parts e.g. ovens, boilers: C zone 2 Unless gap makes sides visible then first 10 cm A zone; removable p
49、arts e.g. SU first 10 cm is A zone thereafter C zone 3 Stowage inside: B zone incl. door inside trolley doors inside 4 Underneath is C zone 5 Underneath is B zone, because it cannot be directly viewed; if higher this will become an A zone A zone B zone C zone Figure 5 Galley BS EN 4726:2015EN 4726:2015 (E) 13 Key 1 Corpus outside: A zone; if masked by wall, seat, etc. visible area: B zone, any areas completely not visible: C zone 2 Corp
