Fatigue safety cases
A safety case is a structured argument, supported by evidence, intended to justify that a system is acceptably safe for a specific application in a specific operating environment (UK Defence Standard 00-56).
Clockwork Research has undertaken fatigue safety cases for aviation operators including easyJet, Qatar Airways, Air France and the Swiss Air Ambulance.
Operators undertake fatigue safety cases for different reasons, including:
- as part of the FRMS, to explore in depth an aspect of the operation
- to demonstrate to the regulator that an existing system of work is safe
- to seek a derogation for work outside of flight and duty time regulations.
Clockwork Research is experienced in designing complex safety cases. Different types of data are collected but typically we utilise activity monitors to evaluate sleep and wake times, sleep and activity logs, psychomotor vigilance tests (PVT) and interviews. We can provide all of the data collection equipment, undertake the statistical analysis and deliver a detailed report to an operator, for review by the regulator where applicable.