Plain English guide for fatigue management rules

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We have developed a plain English guide for fatigue management to make it easy to meet your obligations under Civil Aviation Order 48.1 Instrument 2019 and Subpart 137.Q of Civil Aviation Safety Regulations 1998.

This guide contains information about each appendix, with helpful hints explaining what’s expected of pilots and operators, and what might need to be considered when complying with the fatigue management rules.

Operators may choose to operate to the appendix (or in some cases the appendices) which is/are most appropriate for their operation. Prescriptive appendices range from those intended for simple operations to those intended for highly complex multi-crew operations where acclimatisation and crew augmentation are factors to be considered. A performance based FRMS appendix is also provided for those operators that wish to manage crew fatigue outside prescriptive limits.

The prescriptive appendices also address quite specific types of operation such as flight training, aerial work, medical transport and emergency services, ballooning, and aerial application (aeroplane).

Who will benefit from this guide

Pilots and operators will benefit from a shared understanding of the rules. By providing information in a simple easy to read form, CASA aims to facilitate this common understanding.

Updates since version 1 (December 2020 release)

  • Page 19, 21: flight training section was corrected to state as 'first 7 flight hours' (editing error).
  • Page 11: the section on 'Exception' has been changed to a paragraph starting with 'except when' (this was to correct an interpretation).
  • Page 28, 35 and 42: '10 hours or less' changed to '10 hours or more' (editing error).
  • Page 48: redraft of the provisions which treat an SDRP as an ODP in certain circumstances and deletion of the example (editing error).
  • Page 57: Limits on cumulative flight timetable, the text in parenthesis amended to include reference to mustering operation (error of omission).
  • Changes to text, punctuation and structure throughout the guide to improve clarity and readability.
  • Updated definitions.


We are encouraging feedback on whether this guide provides regulatory information in a simple, easy-to-read and understandable language. We are also interested to know if the structure and format of the information is intuitive.

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