SIST EN 4726:2015
(Main)Aerospace series - Acceptance of the cosmetic variations in appearance of aircraft cabin parts
Aerospace series - Acceptance of the cosmetic variations in appearance of aircraft cabin parts
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 standard 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 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.
Luft- und Raumfahrt - Akzeptanz von kosmetischen Qualitätsabweichungen bei Flugzeug-Kabinenbauteilen
La présente norme européenne définit les surfaces sur des composants visibles dans la cabine d'avion. Les surfaces seront examinées en tenant compte des aspects de faisabilité technique de la conception industrielle.
La présente Norme constitue une ligne directrice s'adressant aux compagnies aériennes, au fournisseur et aux fabricants d'équipement d'origine (FEO) en ce qui concerne les questions d'esthétisme.
Le présent document vise à :
a) Donner au fournisseur des critères de qualité, qui devront être remplis pendant le processus de production, d'essai et d'inspection de la qualité,
b) Orienter l'assurance qualité d'une compagnie aérienne, d'un FEO et d'un fournisseur par la description de normes d'esthétisme pour les inspections suivantes :
- Inspection d'assurance qualité interne du fournisseur ;
- Inspection du premier article ;
- Inspection à la source ;
- Inspection à livraison ;
- Inspection de la cabine sur la chaîne de montage final.
Série aérospatiale - Acceptation des variations esthétiques de l'aspect des éléments de cabine d'avion
Aeronavtika - Odobravanje kozmetičnih odstopanj videza sestavnih delov letalske kabine
Ta standard določa površine na vidnih delih letalske kabine. Površine bodo obravnavane z vidika tehnične izvedljivosti industrijske zasnove.
Ta standard je vodilo za letalske družbe, dobavitelja in proizvajalce originalne opreme glede kozmetičnih elementov.
Cilj tega dokumenta je opredeliti:
a) merila kakovosti za dobavitelja, ki morajo biti izpolnjena med proizvodnjo, preskušanjem in izvajanjem postopkov preverjanja kakovosti;
b) smernice za letalske družbe, proizvajalca originalne opreme in dobavitelja pri zagotavljanju kakovosti z opisom kozmetičnih standardov pri
naslednjih pregledih:
interno preverjanje kakovosti dobavitelja;
prvi pregled artiklov;
preverjanje vira;
dohodni pregled;
končni pregled serijsko izdelane kabine.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.NDELQHLuft- und Raumfahrt - Akzeptanz von kosmetischen Qualitätsabweichungen bei Flugzeug-KabinenbauteilenSérie aérospatiale - Acceptation des variations esthétiques de l'aspect des éléments de cabine d'avionAerospace series - Acceptance of the cosmetic variations in appearance of aircraft cabin parts49.095Oprema za potnike in oprema kabinPassenger and cabin equipmentICS:Ta slovenski standard je istoveten z:EN 4726:2015SIST EN 4726:2015en,fr,de01-november-2015SIST EN 4726:2015SLOVENSKI
STANDARD
SIST EN 4726:2015
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4726
September
t r s w ICS
v {ä r { w English Version
Aerospace series æ Acceptance of the cosmetic variations in appearance of aircraft cabin parts Série aérospatiale æ Acceptation des variations esthétiques de l 5aspect des éléments de cabine d 5avion Luftæ und Raumfahrt æ Akzeptanz von kosmetischen Qualitätsabweichungen bei FlugzeugæKabinenbauteilenThis European Standard was approved by CEN on
s r January
t r s wä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey andUnited Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
9
t r s w CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
v y t xã t r s w ESIST EN 4726:2015
EN 4726:2015 (E) 2 Contents
Page European foreword . 5 1 Scope . 6 2 Normative references . 6 3 Abbreviations . 6 4 Definitions of cosmetic defects, inspection 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 part 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 masters . 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) . 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 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 SIST EN 4726:2015
EN 4726:2015 (E) 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, 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 m2 . 18 Table 2 — Evaluation table valid for parts up to: 0,5 m2 . 19 Table 3 — Evaluation table valid for parts larger than: 0,5 m2 . 20 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 Figure 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 — 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
SIST EN 4726:2015
EN 4726:2015 (E) 4 Figure A.9 — Example of non-acceptable finding . 26 Figure A.10 — Example of decor misalignment finding . 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 finding . 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 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 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 finding . 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
SIST EN 4726:2015
EN 4726:2015 (E) 5 European foreword This document (EN 4726:2015) has been prepared by the Aerospace and Defence Industries 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 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 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 implement 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 4726:2015
EN 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 standard 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 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 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.
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 — 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 the purposes of this document, the following abbreviations and definitions apply. A/C aircraft CDR critical design review 3D three dimensional SIST EN 4726:2015
EN 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 specification 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 specifications/definitions if they are distinct without additional illumination and/or mirror and according to the defined criteria’s 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 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 (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. SIST EN 4726:2015
EN 4726:2015 (E) 8 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 inside. 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. 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 surfaces 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 some cases the installation position is paramount facets covered up of wall flush items will have an upgraded classification if free standing. SIST EN 4726:2015
EN 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 SIST EN 4726:2015
EN 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 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: B zone 7 Tables top and bottom: A zone 8 LCD monitor: A zone
A zone
B zone Figure 2 — Pax seat
SIST EN 4726:2015
EN 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 with
magazine rack and doghouse Typical monument without additional furnishings Key
A zone
B zone Figure 4 — Cabin monument SIST EN 4726:2015
EN 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 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 zone
B zone
C zone Figure 5 — Galley
SIST EN 4726:2015
EN 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 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 Bottom: 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 4.4 Split lines, definition, cutting and placement Decor split line positions are defined by the OEM corporate cabin design department under 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 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 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 shapes 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 film) is always butt jointed. SIST EN 4726:2015
EN 4726:2015 (E) 14 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 cover 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 single part must have a smooth transition, i.e. no noticeable (to the touch) paint depth difference at the edge (supplier to provide samples for acceptance). j) PVF film cut edges are never left exposed except when an overlap is defined. 4.5 Time limits and part appraisal There is no specific time limitation for part appraisal. This is due to the diversity and complexity of parts and finishes which must also be cross-referenced with the pertinent Interior colour specification and any special inspection requirements. The inspector must be allowed to assess the complete validated area of inspection, without time constraints. All inspections should be carried out as expediently as possible with a fair and sensible orientation. 4.6 Distance from the test specimen 4.6.1 Distance at FAI-, source- and incoming – inspection (general ruling) The distance to the surfaces of all items to be inspected shall be not less than 0,4 m without any sight enhancing or influencing (e.g. tinted glasses) instrumentation (if any imperfections are discovered, analysis will be closer and case dependent). Multitudinal observation angles may be employed to capture any aesthetical deviation characteristics. 4.6.2 Distance at FAL, final inspection and customer presentation The distance to the surfaces of all
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.