Manual for the Oversight of Fatigue Management Approaches (Doc 9966), Second Edition, Version 2 – with particular reference to Section 4.2.3.
IATA/ICAO/IFALPA Fatigue Management Guide for Airline Operators
ICAO's Fatigue Management website
Webinars:
Extending Flight and Duty Limits for COVID-19 "Special Ops"
This webcast discusses the risk and possible mitigating strategies of flight duty extensions, providing advice to airlines applying for variations to FDTLs and to regulators who approve these applications.
Managing Fatigue in COVID-19 "Normal Operations"
This webcast provides insight into managing fatigue risks introduced by the operational changes during COVID-19 conducted within national FDTLs, and how data-driven decisions are a key component of overall flight safety.