ASD-STAN PREN 4726-2013 Aerospace series Acceptance of the cosmetic variations in appearance of aircraft cabin parts (Edition P 1).pdf

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1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 4726 Edition P 1 December 2013 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONRue Montoyer 10 - 1000 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.orgICS: Descriptors: ENGLISH VERSION Ae

2、rospace series Acceptance of the cosmetic variations in appearance of aircraft cabin parts Srie arospatiale Acceptation des variations esthtiques de laspect des lments de cabine davion Luft- und Raumfahrt Akzeptanz von kosmetischen Qualittsabweichungen bei Flugzeug-Kabinenbauteilen This “Aerospace S

3、eries“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain followin

4、g member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of ASD-

5、STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by giving the EN the status of a national standar

6、d and by withdrawing any national standards conflicting with the EN. Edition approved for publication 1st December 2013 Comments should be sent within six months after the date of publication to ASD-STAN Engineering Procedures Domain Copyright 2013 by ASD-STAN prEN 4726:2013 (E) 2 Contents Page Fore

7、word 4 1 Scope 5 2 Normative references 5 3 Abbreviations . 5 4 Definitions of cosmetic defects, inspection zones and criteria 6 4.1 Simplified definition of a cosmetic defect . 6 4.2 Zonal type definition for installed parts 6 4.2.1 Zone A . 6 4.2.2 Zone B . 6 4.2.3 Zone C . 6 4.3 Classification of

8、 surfaces to be inspected 7 4.4 Split lines, definition, cutting and placement . 11 4.5 Time limits and part appraisal 11 4.6 Distance from the test specimen . 11 4.6.1 Distance at FAI-, source- and incoming inspection (general ruling) 11 4.6.2 Distance at FAL, final inspection and customer presenta

9、tion 12 4.7 Illumination . 12 4.7.1 Additional light sources 12 4.7.2 Surfaces 12 4.7.3 Production masters . 15 5 Evaluation tables and defect size assessment. 15 6 Inspection template to ascertain defect sizes 17 Annex A (normative) Unacceptable characteristics of findings . 18 A.1 General 18 A.2 P

10、erforation, puncture or penetration . 18 A.3 Cuts, cracks, scratches, pits tears and rips (any medium) . 18 A.4 Adherence, de-lamination, loose / flimsy items . 20 A.5 Stains 21 A.6 Excess adhesive (glue) and sealant 21 A.7 Decor overlapping / joints . 22 A.8 Differences in decor 23 A.9 Pattern dist

11、ortion through application 23 A.10 Texture loss 23 A.11 Misalignment whether pattern, material, part or point 23 A.12 Dents and dings . 26 A.13 Decor trimming (cut-outs) . 26 A.14 Telegraphing 27 A.15 Changes of colours / shades 27 A.16 Chafing marks 28 A.17 Brushing direction . 30 A.18 Creases on b

12、ends, rippling . 30 A.19 Sharp edges . 30 A.20 Protrusions and sinking 30 A.21 Welds 30 A.22 Chrome and galvanization 30 A.23 Gaps 31 A.24 Manufacturing process tooling marks 31 A.25 Seams . 31 A.26 Textiles and leather, colouring and surface texture 31 A.27 “Soft furnishing“ 32 A.28 Screws 32 prEN

13、4726:2013 (E) 3 A.29 Inserts . 34 A.30 Foam seals and flexible seals 36 A.31 Varnish, clear lacquer finishes 36 A.32 Placards, signs, labels and engravings 36 A.33 Light leakage 36 A.34 Transparent sections of components . 36 A.35 Retouching / reworks 37 Tables Table 1 Evaluation Table valid for par

14、ts up to: 0,25 m2. 15 Table 2 Evaluation table valid for parts up to: 0,5 m215 Table 3 Evaluation table valid for parts larger than: 0,5 m216 Table 4 Evaluation table valid for broad but not long defects, e. g. scratches, low marks, over spraying, hairs etc. 16 Figures Figure 1 Cabin lining . 7 Figu

15、re 2 Pax seat . 8 Figure 3 CAS seat 9 Figure 4 Cabin monument 9 Figure 5 Galley . 10 Figure 6 Example for other cabin parts . 10 Figure 7 Example for inspection template to ascertain defect sizes . 17 Figure A.1 Example of a perforation finding . 18 Figure A.2 Example of a crack finding . 19 Figure

16、A.3 Example of a cut finding . 19 Figure A.4 Example of a paint defect finding 19 Figure A.5 Example of a scratch finding . 20 Figure A.6 Example of a scratch finding . 20 Figure A.7 Example of a poor adhesion finding . 21 Figure A.8 Example of a stain finding 21 Figure A.9 Example of non-acceptable

17、 finding 22 Figure A.10 Example of decor misalignment finding . 22 Figure A.11 Example of uneven split line finding . 22 Figure A.12 Example of poor fit split line finding . 23 Figure A.13 Example of an alignment finding . 24 Figure A.14 Example of a misalignment finding . 24 Figure A.15 Example of

18、an alignment finding . 25 Figure A.16 Example of an alignment finding . 25 Figure A.17 Example of a dent finding 26 Figure A.18 Example of an uneven edge finding 26 Figure A.19 Example of a poor trimming finding . 27 prEN 4726:2013 (E) 4 Figure A.20 Example of a discolouration finding . 27 Figure A.

19、21 Example of a chafing finding . 28 Figure A.22 Example of a chafing finding . 28 Figure A.23 Example of a chafing finding . 28 Figure A.24 Example of an indentation finding . 29 Figure A.25 Example of a cut finding . 29 Figure A.26 Example of an hole finding . 29 Figure A.27 Example of a protrusio

20、n finding 30 Figure A.28 Example of a stain finding 31 Figure A.29 Example of a disfigurement finding 32 Figure A.30 Example of a ground screw finding . 33 Figure A.31 Example of a countersink finding 33 Figure A.32 Example of a missing screw finding . 34 Figure A.33 Example of a bad hole finding .

21、34 Figure A.34 Example of a blocked insert finding 35 Figure A.35 Example of an excessive glue finding 35 Figure A.36 Example of a not de-burred insert finding 35 Figure A.37 Example of a blistering finding 36 Figure A.38 Example of a thin layer finding 37 Foreword This standard was reviewed by the

22、Domain Technical Coordinator of ASD-STANs Engineering Procedures Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 4726:2013 (E) 5 1 Scope This standard defines

23、 surfaces on visible components in the aircraft cabin. Surfaces will be considered under the aspects of technical feasibility of the industrial design. This standard is a guideline between airlines, supplier and OEMs with regard to cosmetic issues. This document aims to: a) Provide the supplier with

24、 quality criteria, which need to be met during the production, testing- and quality-inspection-process, b) Guide airline-, OEM- and supplier-quality assurance with a description of cosmetic standards for following inspections: Supplier internal QA inspection; First article inspection; Source inspect

25、ion; Incoming inspection; Final assembly line cabin inspection. 2 Normative references The 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, th

26、e latest edition of the referenced document (including any amendments) applies. EN 12464-1, Light and lighting Lighting of work places Part 1: Indoor work places 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

27、 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* Colour 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 th

28、e purposes of this document, the following abbreviations and definitions apply. A/C aircraft CDR critical design review 3D three dimensional CAS cabin attendant seat e.g. for example prEN 4726:2013 (E) 6 FAI first article inspection FAL final assembly line HTPT hydro transfer printing technology ICS

29、 Industrial design colour specification NTF non-textile floor OEM original equipment manufacturer Pax passenger PTS purchaser technical specification PVF polyvinyl fluoride QA quality assurance QC quality control TTL taxi, take-off and landing SU Service unit 4 Definitions of cosmetic defects, inspe

30、ction zones and criteria 4.1 Simplified definition of a cosmetic defect Cosmetic defects are deviations from the standard or customized specifications/definitions if they are distinct without additional illumination and/or mirror and according to the defined criterias within this standard. The defec

31、ts listed encompass any process relevant material. Pick-ups raised by OEM which are disputed between both parties (OEM and supplier) are subject 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 sup

32、plier 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 (and edges) directly visible after installation in TTL position from a standing or seating position; specially critically parts regarded by the customer e

33、.g. table top / backs and video arms and as well as areas around logos. 4.2.2 Zone B All surfaces (and edges) not 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 insid

34、e. 4.2.3 Zone C All surfaces (and edges) not visible after installation from a standing or seating position and 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. prEN 4726

35、:2013 (E) 7 4.3 Classification of surfaces to be inspected The surfaces to be inspected are classified into three zones (A, B, C). Customers 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 su

36、rfaces according to the below zones prerequisites unless otherwise agreed. Figure 1 to Figure 6 show typical areas for the zone classification. Areas/parts allowing functional manual or driven movement, thereby becoming fully visible to the passenger or cabin crew, are classified as “A” zones. In so

37、me cases the installation position is paramount facets covered up of wall flush items will have an upgraded classification if free standing. Key 1 Side wall stowage lid shown open to view lid inside A zone B zone C zone Figure 1 Cabin lining prEN 4726:2013 (E) 8 Key 1 Stowages insides: B zone 2 Rear

38、 walls, if free standing: A zone; if rear side very close to a wall (i.e. masked by 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 viewe

39、d incl. during operational movement: C zone 5 Reade side: A zone 6 Stowage insides: B zone 7 Tables top and bottom: A zone 8 LCD monitor: A zone A zone B zone Figure 2 Pax seat prEN 4726:2013 (E) 9 Key 1 Only if flush to a wall: B zone behind headrest, back of seat 2 A zone, under seat pan shroud, u

40、nderneath of footrest A zone B zone Figure 3 CAS seat Typical monument with magazine rack and doghouse Typical monument without additional furnishings Key A zone B zone Figure 4 Cabin monument prEN 4726:2013 (E) 10 Key 1 Shelves and cupboards for: fixed parts e.g. ovens, boilers: C zone 2 Unless gap

41、 makes sides visible then first 10 cm A zone; removable parts 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 zo

42、ne B zone C zone Figure 5 Galley Key 1 Corpus outside: A zone; if masked by wall, seat, etc. visible area: B zone, any areas completely not visible: C zone 2 Corpus inside: B zone; if part of inside not visible by normal operation: C zone 3 Drawer and door inside: B zone 4 Door outside: A zone 5 Bot

43、tom: C zone 6 Backside if outboard lateral side: B zone; if free standing: A zone A zone B zone C zone Figure 6 Example for other cabin parts prEN 4726:2013 (E) 11 4.4 Split lines, definition, cutting and placement Decor split line positions are defined by the OEM corporate cabin design department u

44、nder advisement and in conjunction with the supplier so as to include all aspects of design prerequisites and feasibility. Split lines are inherent to a successful and controllable development and in some cases a necessity to achieve pattern harmony; therefore a split line or its position cannot be

45、accepted as a reason for customer rejection. Due to the complex nature of the definition process split lines are shown in the corresponding colour specification to provide design direction and understanding. General split line rules: a) Any applied film, split line position tolerance is 2 mm, i.e. 1

46、 mm on curved or wavy surfaces and will be 1 mm, i.e. 0,5 mm on purely flat surfaces. b) In cases of split line production templates, the templates may also be used for quality inspection checks. c) Split line necessity overrules aesthetic reasoning. d) Parts with integrated deep recesses or 3D shap

47、es surpass most technical solutions for films and therefore generally split lines will be set or a different medium chosen. e) PVF Film split lines are always overlapped by 10 mm and if wrapped around edges, e.g. doors, etc. must also have a minimum of 10 mm wrap around. Reinforced material (PVF fil

48、m) is always butt jointed. f) All split lines in all mediums are optically straight, neat (no over spray by painting) and run parallel to edges, i.e. vertical or horizontal, unless otherwise defined. If a split line is noticeable to the eye, i.e. slanted it is considered a defect. Butt joint edges c

49、over the substrate panel completely, i.e. nothing of the panel is visible through the butt joint. g) Split lines are as a rule visible and are therefore so acceptable, although the goal is always to make them as least obvious as possible. h) Split lines for hydro transfer printing technology (HTPT) have a different set of rules and can be found in the HTPT PTS document. i) Paint split lines whereby two different colours meet on a sin