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BS EN 4863:2023

BS EN 4863:2023

$198.66

Aerospace series. Rotorcraft immersion suits. Requirements, testing and marking

Published By Publication Date Number of Pages
BSI 2023 62
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This document specifies requirements for immersion suits for use by helicopter crew members and passengers in the event of a ditching or water impact, to ensure minimum levels of performance. It applies to immersion suits for use by adults only.

PDF Catalog

PDF Pages PDF Title
2 undefined
11 1 Scope
2 Normative references
12 3 Terms and definitions
16 4 Classification
17 5 Requirements
5.1 General
5.2 Design
18 5.3 Size and fit
19 5.4 Materials and components
5.4.1 General
5.4.2 Fuel resistance
5.4.3 Fabric flammability
5.4.4 Fabric thermal conductivity
5.4.4.1 Outer fabrics
5.4.4.2 Insulating material
20 5.4.5 Tensile strength of seams
5.4.6 Coated fabrics
5.4.7 Other fabrics
21 5.4.8 Fabric mass
5.4.9 Metallic components
5.5 Resistance to temperature variation
5.6 Flammability
5.7 Wear and tear
5.8 Conspicuity
5.8.1 Colour
23 5.8.2 Retroreflective material
24 5.9 EBS
5.10 Other optional accessories
5.11 Ergonomic performance
5.11.1 Donning and fit
25 5.11.2 Cold donning of hood and gloves
5.11.3 Ergonomics
5.11.4 Water ingress
5.11.5 Escape buoyancy
5.11.6 Thermal protection
26 5.11.7 Thermal comfort in flight
5.12 Additional requirements for integrated immersion suits
5.12.1 Survivor locator light
27 5.12.2 Whistle
5.12.3 Lifting loop
5.12.4 Buddy line
28 5.12.5 Inflation systems
5.12.5.1 General
5.12.5.2 Manual inflation system
29 5.12.5.3 Operation of manual inflation system
5.12.5.4 Oral inflation system
5.12.5.5 Gas cylinders
5.12.6 Inflation chamber materials
5.12.7 Overpressure
5.12.8 Buoyancy
30 5.12.9 Flotation angle and freeboard
5.12.10 Sprayhood
31 5.12.11 Torque
5.13 Immersion suit system performance and compatibility requirements
5.13.1 General
5.13.2 Immersion suit system performance
5.13.2.1 General
32 5.13.2.2 Donning and fit
5.13.2.3 Ride-up
5.13.2.4 Helicopter escape
5.13.2.5 Jump into water
5.13.2.6 Freeboard
5.13.2.7 Turning
33 5.13.2.8 Self-righting
5.13.2.9 In-water stability
5.13.2.10 Field of vision
5.13.2.11 Freedom of movement and use of accessories
5.13.2.12 Liferafts boarding
34 5.13.2.13 Rescue and recovery
5.13.2.14 Escape buoyancy
6 Testing
6.1 Visual inspection
6.2 Nominal values and tolerances
6.3 Order of testing
6.4 Fuel resistance of materials and components
35 6.5 Magnetic properties testing
6.6 Temperature cycling
6.7 Flammability test
36 6.8 Wear and tear
38 6.9 Retroreflective material application
6.10 Ergonomic performance
6.10.1 General
39 6.10.2 Test subjects
6.10.3 Test clothing
40 6.10.4 Donning and fit
6.10.5 Walking
6.10.6 Climbing
41 6.10.7 Mobility and manual dexterity
6.10.8 Ride-up assessment
6.10.9 Helicopter underwater escape
42 6.10.10 Jump into water
43 6.10.11 Freeboard
6.10.12 Water ingress
6.10.12.1 Leakage measurement for jumping
44 6.10.12.2 Leakage measurement for swimming
6.10.13 Turning
45 6.10.14 Self-righting
6.10.15 In-water stability test
46 6.10.16 Field of vision
6.10.17 Colour
6.10.18 Freedom of movement and use of accessories
47 6.10.19 Liferafts boarding
6.10.20 Rescue and recovery
6.10.21 Escape buoyancy
48 6.10.22 Thermal protection
6.10.22.1 Test subjects
6.10.22.2 Test clothing
6.10.22.3 Temperature measurement
49 6.10.22.4 Procedure
50 6.10.23 Cold donning of hood and gloves
6.11 Additional tests for integrated immersion suits
6.11.1 Inflation tests
6.11.2 Overpressure test
6.11.3 Buoyancy
51 6.11.4 Sprayhood gas exchange test
6.11.5 Strength of lifting loop
6.11.6 Buddy line
6.11.7 Flotation angles
6.11.8 Freedom of movement and use of accessories
6.11.9 Sprayhood
52 6.11.10 Torque test
6.12 Immersion suit system performance and compatibility
6.12.1 General
6.12.2 Test subjects
6.12.3 Clothing
6.12.4 Immersion suit system performance and compatibility testing
53 6.13 Crew equipment compatibility
55 6.14 Reporting
7 Marking
56 8 Information supplied by the manufacturer
58 Annex A (informative)Guidelines for manufacturers and users relating to the different categories of immersion suit
A.1 General
A.2 Operational application of immersion suit categories

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BS EN 4863:2023
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