Developing a Safety Management System for Fatigue Related Risks in easyJet(2)

Definitions
Accident
Fatigue Risk Management System

Fatigue
Fatigue Countermeasures Training
Duty Crewmember
Hazard HILAS
An unintended event or sequence of events that cause death, injury, environmental or material damage. A data-driven flexible alternative to prescriptive flight and duty time limitations which is based upon scientifically valid principles and measurements and which involves a continuous process of monitoring and managing fatigue risk within the context of an operator’s Safety Management System. A physiological state
 of reduced mental or physical performance capability resulting from sleep loss or extended wakefulness and/or physical activity that can impair a crew member’s alertness and ability to safely operate an aircraft or perform safety related duties.
A competency based training program designed to develop the
awareness of all stakeholders about how the interaction of
operational, rest, sleep, circadian and lifestyle factors impacts on the
potential fatigue and resulting crew alertness and performance during
flight operations.
Any task that flight crew or cabin crew personnel are required by the operator to perform, including, for example, flight duty, administrative A person assigned by an operator to duty on an aircraft during a flight duty period.
A physical situation, often following from some initiating event that can lead to an accident.
EU Commission funded HILAS project (Human Integration into the
Lifecycle of Aviation Systems) to introduce new scalable
methodologies and technology to satisfy future regulatory
requirements for SMS as well as introducing resilience principles into
the easyJet operation to improve safety effectiveness and operational
integrity based on organisational process knowledge and mapping,
lean enterprise initiatives, technological innovation, risk based
decision making and organisational learning.
S. Stewart, F. Koornneef, R. Akselsson, and C. Turner  - HILAS 2009

practicable.
An occurrence, other than an accident, associated with the operation of an aircraft that affects or could affect the safety of operation. A level of how far safety is to be pursued in a given context, assessed with reference to an acceptable risk, based on the current values of society. Application of subjective, non-numerical methods to  assess system and aeroplane safety Application of mathematical methods to assess system and aeroplane safety. Is the combination of the probability, or frequency of occurrence of a defined potentially harmful event and the magnitude of the consequences of the occurrence. Assessment of the system or component to establish if the achieved risk level is lower than or equal to the tolerable risk level. Freedom from unacceptable risk of harm. The systematic management of the operational risks associated with flight, engineering and ground activities in order to achieve as high a level of safety performance as is reasonably practicable. A systematic approach to managing safety, including the necessary organizational structures, accountabilities, policies and procedures A systematic, comprehensive evaluation of an implemented system to show that the safety requirements are met. A safety objective is a planned and considered goal that has been set
　
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