EN 4726:2018+AC:2019
(Main)Aerospace series - Acceptance parameters of aesthetical variations for all visible equipment installed in aircraft cabins under all contractual variations
Aerospace series - Acceptance parameters of aesthetical variations for all visible equipment installed in aircraft cabins under all contractual variations
This document defines the inspection rules and the cosmetic acceptance criteria for surfaces of aircraft cabin equipment. Surfaces will be considered under the aspects of technical feasibility of the industrial design.
This document outlines the framework between airlines, supplier and OEMs with regard to cosmetic issues.
This document aims to:
a) provide the supplier or manufacturer 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;
- customer presentation.
Luft- und Raumfahrt - Abnahmeparameter von ästhetischen Qualitätsabweichungen für alle sichtbaren Flugzeug-Kabinenbauteile in allen vertraglichen Varianten
Série aérospatiale - Acceptation des variations esthétiques de l'aspect des éléments visibles de cabine d'avion sous toute forme contractuelle
Aeronavtika - Prevzemna merila za estetske različice vseh vidnih naprav, vgrajenih v letalske potniške kabine po vseh pogodbenih različicah (vključno s popravkom AC)
Ta dokument določa pravila pregledov in prevzemna merila estetske sprejemljivosti vseh površin letalske potniške kabine. Površine bodo obravnavane z vidika tehnične izvedljivosti industrijske zasnove.
Ta dokument določa okvir za letalske družbe, dobavitelja in proizvajalce originalne opreme glede kozmetičnih elementov.
Cilj tega dokumenta je opredeliti:
a) merila kakovosti za dobavitelja ali proizvajalca, 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 izvora;
– vhodni pregled;
– končni pregled serijsko izdelane kabine;
– predstavitev stranki.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2019
Nadomešča:
SIST EN 4726:2019
Aeronavtika - Prevzemna merila za estetske različice vseh vidnih naprav, vgrajenih
v letalske potniške kabine po vseh pogodbenih različicah (vključno s popravkom
AC)
Aerospace series - Acceptance parameters of aesthetical variations for all visible
equipment installed in aircraft cabins under all contractual variations
Luft- und Raumfahrt - Abnahmeparameter von ästhetischen Qualitätsabweichungen für
alle sichtbaren Flugzeug-Kabinenbauteile in allen vertraglichen Varianten
Série aérospatiale - Acceptation des variations esthétiques de l'aspect des éléments
visibles de cabine d'avion sous toute forme contractuelle
Ta slovenski standard je istoveten z: EN 4726:2018+AC:2019
ICS:
49.095 Oprema za potnike in Passenger and cabin
oprema kabin equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 4726:2018+AC
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2019
EUROPÄISCHE NORM
ICS 49.095 Supersedes EN 4726:2018
English Version
Aerospace series - Acceptance parameters of aesthetical
variations for all visible equipment installed in aircraft
cabins under all contractual variations
Série aérospatiale - Acceptation des variations Luft- und Raumfahrt - Abnahmeparameter von
esthétiques de l'aspect des éléments visibles de cabine ästhetischen Qualitätsabweichungen für alle
d'avion sous toute forme contractuelle sichtbaren Flugzeug-Kabinenbauteile in allen
vertraglichen Varianten
This European Standard was approved by CEN on 13 May 2018 and includes the Corrigendum issued by CEN on 10 April 2019.
CEN members are bound 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-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 has 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,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATIO N
EUROPÄISCHES KOMITEE FÜR NORMUN G
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4726:2018+AC:2019 E
worldwide for CEN national Members.
Contents
Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms, definitions and abbreviations . 4
4 Definitions of cosmetic defects, inspection zones and criteria . 6
5 Unacceptable characteristics . 39
6 Evaluation tables and defect size assessment . 62
7 Inspection template to ascertain defect sizes . 64
(informative) Standard evolution form . 66
European foreword
This document (EN 4726:2018+AC:2019) 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 document shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by October 2019, and conflicting national standards shall be withdrawn
at the latest by October 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document includes Corrigendum 1 issued by CEN on 10 April 2019.
This document supersedes ˜EN 4726:2018™.
The start and finish of text introduced or altered by corrigendum is indicated in the text by tags
˜ ™.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
1 Scope
This document defines the inspection rules and the cosmetic acceptance criteria for surfaces of aircraft
cabin equipment. Surfaces will be considered under the aspects of technical feasibility of the industrial
design.
This document outlines the framework between airlines, supplier and OEMs with regard to cosmetic
issues.
This document aims to:
a) provide the supplier or manufacturer 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;
— customer presentation.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. 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 gloss value at 20°, 60° and 85°
3 Terms, definitions and abbreviations
3.1 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.2 Abbreviations
For the purposes of this document, the following abbreviations apply.
3D three Dimensional
BFE Buyer Furnished Equipment (from OEM perspective)
CAS Cabin Attendant Seat
CDR Critical Design Review
CIE international commission on illumination
DPI Dots Per Inch
DSM Decorative Sheet Material
e.g. for example
etc. and so on
FAI First Article Inspection
FAL Final Assembly Line (OEM)
FFF Fit, Form and Function
HTPT Hydro Transfer Printing Technology
i.e. that is to say
ICS Industrial design Colour Specification (OEM)
incl. including
LED Light Emitting Diode
LHS Left Hand Side
NTF Non-Textile Floor
OEM Original Equipment Manufacturer
PTS Purchaser Technical Specification
PVF polyvinyl fluoride film
RFC Request For Change
RHS Right Hand Side
QC Quality Control
SCN Specific Change Note
SFE Seller Furnished Equipment (from OEM perspective)
SSBFE Seller Supplied BFE
SU Standard Unit
UV UltraViolet
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. They are
distinct from a certain distance without additional illumination and/or mirror and according to the
definitions thereof within this European standard. Cosmetic defects do not affect fit-form-function as a
rule, however in certain extreme cases this might actually be the case e.g. if paint build up impedes
fitting. The defects listed encompass any process relevant material.
Seller furnished equipment (SFE) or similar status: The supplier is not allowed to approach the airline
concerning cosmetic issues or definition changes.
Buyer Furnished Equipment (BFE)/Seller Supplied BFE (SSBFE) or similar status: Pickups or points of
contention raised by OEM which are disputed between both parties (OEM and supplier or
manufacturer) will be submitted to the customer to make the definitive and binding decision for all
parties. Any decision has to be documented by the supplier or manufacturer and accompany each
individual unit in a conspicuous legible way without causing damage to the part/parts in question. All
parties will adhere to the customer decision until as such times another supersedes it.
For SFE, SSBFE and BFE all 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 primary viewed surfaces by a potential passenger or crew either walking through the aircraft or in
any normal seating position or passenger/crew used furniture, e.g. table top/backs. Any surface which
is directly seen, through either expected operation or expected viewing movement, see Figure 1.
a) Passegner and crew b) Passenger and c) Passenger and crew member
member seating, top view crew member walking
seating, side view
NOTE The viewing cone would move according to the head movements up/down and left/right.
Figure 1 — Passenger’s viewing cone when seating in any position or walking through the cabin
4.2.2 Zone B
Secondary perceived surfaces - surfaces requiring extreme movement of the viewing angle to be
perceived, i.e. the viewer has to abnormally bend to be able to see it. Areas which may be perceived by
passengers or crew through normal operation e.g. stowages inside and stowage doors inside. Standard
stowage interiors are appraised from the stowage door threshold, not by climbing or poking the head
inside.
Purposely designed “walk in” monuments shall be entered and appraised in the standard method from
within i.e. interior walls are A zone etc.
4.2.3 Zone C
Surfaces that require - first “opening up”, e.g. folding, moving or removal of primary or secondarily
viewed areas, In order to view the area in question e.g. inside a lavatory mirror cabinet. Can only be
viewed using equipment. Areas expected to be perceived by support staff and not passengers. Areas not
visible after installation and that have no defined aesthetical surface treatment are still within the
parameters of zone C; however still maintaining other requirements e.g. closed edges, fit, form and
function etc. Sizes/dimensions of areas/surfaces eligible shall be demonstrated in the technical
documentation and require the OEM acceptance.
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 at initial technical coordination meeting or functionally similar
meeting latest at Critical Design Review (CDR) or functionally similar meeting areas that may be
exceptions after installation in the cabin of the aircraft, all other surfaces according to the below zonal
prerequisites unless otherwise agreed.
For BFE additionally (or similar status):
The customer is required to clearly document and inform the OEM and supplier of his expectations
regarding classification of surfaces.
Figure 2 shows typical areas for the zones, which are applied cross programm i.e. irrelevant of
passenger aircraft model.
Cockpit areas (incl freighters) are considered outside of this European standard and need to be defined
on demand between OEM, supplier and customer. The exception to this, is furniture, e.g. lavatories or
crew rest that share common walls with the cabin.
Freighters, currier or crew perceived or frequented areas i.e. cabin linings/furniture are “A” zones,
cargo areas are considered outside this classification and need to be defined on demand between OEM,
supplier and customer.
Key
1 Outboard side of a window shade is C zone. Inboard A zone
2 Side wall stowage lid shown open to view lid inside
3 Window funnel interior is A zone
NOTE 1 Endcaps on over head stowage compartment is not shown.
NOTE 2 LHS lining is a mirror of the RHS.
NOTE 3 Linings- outboard surfaces are generally C zone.
NOTE 4 Linings- inboard surfaces are generally A zone.
A zone
B zone
C zone
Figure 2 — Cabin lining
The Figure 3 to Figure 14 show typical areas for the zones which are applied cross program, i.e.
irrelevant of passenger aircraft model or monument type.
Interior parts o
...
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