EN 4863:2023

SLOVENSKI STANDARD
01-julij-2023
Aeronavtika - Potopne obleke za posadko v rotoplanu - Zahteve, preskušanje in
označevanje
Aerospace series - Rotorcraft immersion suits - Requirements, testing and marking
Luft- und Raumfahrt - Drehflüglerschutzkleidung gegen Unterkühlung im Wasser -
Anforderungen, Prüfung und Kennzeichnung
Série aérospatiale - Combinaisons de protection thermique en cas d’immersion de
giravion - Exigences, essais et marquage
Ta slovenski standard je istoveten z: EN 4863:2023
ICS:
13.340.10 Varovalna obleka Protective clothing
49.020 Letala in vesoljska vozila na Aircraft and space vehicles in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4863
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2023
EUROPÄISCHE NORM
ICS 13.340.10
English Version
Aerospace series - Rotorcraft immersion suits -
Requirements, testing and marking
Série aérospatiale - Combinaisons de protection Luft- und Raumfahrt - Eintauchanzüge für Drehflügler -
thermique en cas d'immersion de giravion - Exigences, Anforderungen, Prüfung und Kennzeichnung
essais et marquage
This European Standard was approved by CEN on 2 January 2023.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4863:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Classification. 12
5 Requirements . 13
5.1 General. 13
5.2 Design . 13
5.3 Size and fit . 14
5.4 Materials and components . 15
5.4.1 General. 15
5.4.2 Fuel resistance . 15
5.4.3 Fabric flammability . 15
5.4.4 Fabric thermal conductivity. 15
5.4.5 Tensile strength of seams . 16
5.4.6 Coated fabrics . 16
5.4.7 Other fabrics . 16
5.4.8 Fabric mass . 17
5.4.9 Metallic components . 17
5.5 Resistance to temperature variation . 17
5.6 Flammability . 17
5.7 Wear and tear . 17
5.8 Conspicuity . 17
5.8.1 Colour . 17
5.8.2 Retroreflective material . 19
5.9 EBS . 20
5.10 Other optional accessories . 20
5.11 Ergonomic performance . 20
5.11.1 Donning and fit . 20
5.11.2 Cold donning of hood and gloves . 21
5.11.3 Ergonomics . 21
5.11.4 Water ingress . 21
5.11.5 Escape buoyancy . 21
5.11.6 Thermal protection . 21
5.11.7 Thermal comfort in flight . 22
5.12 Additional requirements for integrated immersion suits . 22
5.12.1 Survivor locator light . 22
5.12.2 Whistle . 23
5.12.3 Lifting loop . 23
5.12.4 Buddy line . 23
5.12.5 Inflation systems . 24
5.12.6 Inflation chamber materials . 25
5.12.7 Overpressure . 25
5.12.8 Buoyancy . 25
5.12.9 Flotation angle and freeboard . 26
5.12.10 Sprayhood . 26
5.12.11 Torque . 27
5.13 Immersion suit system performance and compatibility requirements . 27
5.13.1 General . 27
5.13.2 Immersion suit system performance . 27
6 Testing . 30
6.1 Visual inspection . 30
6.2 Nominal values and tolerances . 30
6.3 Order of testing . 30
6.4 Fuel resistance of materials and components . 30
6.5 Magnetic properties testing . 31
6.6 Temperature cycling . 31
6.7 Flammability test . 31
6.8 Wear and tear . 32
6.9 Retroreflective material application . 34
6.10 Ergonomic performance . 34
6.10.1 General . 34
6.10.2 Test subjects . 35
6.10.3 Test clothing . 35
6.10.4 Donning and fit . 36
6.10.5 Walking . 36
6.10.6 Climbing . 36
6.10.7 Mobility and manual dexterity . 37
6.10.8 Ride-up assessment . 37
6.10.9 Helicopter underwater escape . 37
6.10.10 Jump into water . 38
6.10.11 Freeboard .
...