Slide 1
Graham Greene
Chairman JAA Occupant Survivability Project Advisory Group
Slide 2
Anthropometric Research Study
JAA Study Background
Increasing body dimensions (eg 17mm UK male height increase 1981-1995) plus increasing obesity concerns
Longer duration flights Travelling population ageing
Slide 3
Regulatory impact
Concerns expressed by airlines v concerns expressed by pax
No explicit regulations with the exception of the UK
Regulations need to be based on sound (scientific) advice together with cost-effectiveness studies
Slide 4
Study Terms of reference
Comfort not an issue – very subjective Seating must be able to safely
accommodate pax Other relevant matters – holistic
approach
Slide 5
Contract Award
Invitations in European Journal ICE Ergonomics, Loughborough UK
Substantial experience in transport ergonomics
Anthropometric studies background Nottingham University of Medicine
Slide 6
Study Methodology
Questionnaire – check all issues covered Review of AN64 – only existing standard
dimensions computer models for ergonomics
Safety implications and health One year duration
Slide 7
Study Report
Questionnaire – brief, 300 pax, long(22hrs) and short haul (4hrs)
Ages up to 76 years, height to 6’6’’ Around 30% ‘experienced problems’ with seat
spacing Confirmed importance of AN64 measurements
and identified other issues
Slide 8
Study Report
Expert appraisal by 3 ergonomists SAMMIE ergonomics design system
(CAD) – developed over 25 years for seating arrangements
Up-to date anthropometric data
Slide 9
Conclusions 1
Recommended that (AN64) Dimension A be increased from 26ins (660mm) to at least 28.2ins (711mm) to accommodate 95%ile European seated pax.
Note that a 99%ile European male would need a space of 31.3 inches (795mm)
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Conclusions 2
Substantial list of seating dimensions building on AN64 for consideration eg lower leg/foot space/clearance envelope.
Explore value of ‘flip-up’ seat squabs
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Conclusions 3
Support for comprehensive research on the effects of prolonged seating/ability to move.
Egress trials to validate some recommendations
Full report on JAA website www.jaa.nl
Slide 12
Way Forward
Results to JAA Cabin Safety Steering Group for regulatory consideration
Formation of a Working Group, Work plan approved by C-JAA
Slide 13
JAA Working Group
Review spacing recommendations Implications of reduced mobility Accident implications Benefit to European flying population Regulatory impact assessment EASA responsibility
Slide 14
• Review spacing recommendations
Straightforward in principle – physical dimensions of populations
Judgements – eg. 95 percentile? Value of other spacing definitions
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• Implications of Reduced Mobility
Evacuation implications –very little published work
How important is the issue compared with other evacuation issues?
Pax health
Slide 16
• Accident Implications
Impact Brace position Upper torso restraint?