Developing a Safety Management System for Fatigue Related Risks in easyJet
S. Stewart, F. Koornneef, R. Akselsson, &
C. Turner
September 30, 2009

EARLY DRAFT of HILAS Book Chapter

“An FRMS represents a “paradigm shift” in the way we manage the risks of fatigue. Such a system would be part of an airline’s Safety Management System, requiring a “just culture” environment and the full commitment of management.”
Curt Graeber, Chairman ICAO FRMS Task Force
“Measure what is important; don’t make important what you can measure”
Robert McNamara, US Secretary of State for Defence during the Vietnam War, advising his air force chiefs, when he discovered that they were using the number of buildings destroyed by bombs as a critical success factor

S. Stewart, F. Koornneef, R. Akselsson, and C. Turner  - HILAS 2009

Table of Contents
Definitions ......................................................................................................................................... 4
Abbreviations .................................................................................................................................... 6

1.1 Introduction ............................................................................................................................. 11

1.2 Background to fatigue and operational safety .............................................................................. 11

1.2.1 EasyJet and operational fatigue issues ...............................................................................12

1.2.2
1.3
1.4
1.5
1.5.1
1.6

1.12.2 Dawson & McCulloch Trajectory Model (2005) ................................................................34

1.12.3 Safety Risk Management and fatigue-related risk ...............................................................35

1.13 System Integrated Risk Assessment (SIRA) ................................................................................ 37

1.14 EasyJet Management system for Fatigue related risk including a Fatigue risk management model .... 42
1.14.1 Implementation of a Fatigue Risk Management System at easyJet .......................................43

1.14.2 Reasons supporting FRMS implementation .......................................................................44
References ....................................................................................................................................... 45

S. Stewart, F. Koornneef, R. Akselsson, and C. Turner  - HILAS 2009
Duty period  A period which starts when flight crew or cabin crew personnel are
required by an operator to report for or to commence a duty and ends when that person is free from all duties.
Rest period A continuous and defined period of time, subsequent to and/or prior to duty, during which flight or cabin crew personnel are free of all duties Roster A list provided by the operator of the times when a crew member is required to undertake duties.
　
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