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CASR Part 91 - General operating and flight rules
Part 91 of the Civil Aviation Safety Regulations 1998 (CASR) and its associated manual of standards (MOS) consolidates the general operating and flight rules for Australian aircraft.
Who Part 91 affects
Part 91 is the foundation for all aviation operations.
These are the rules of the air for pilots who are not operating under an Air Operator’s Certificate (AOC) or other certificate.
If you are conducting an operation to which another CASR Part applies, then that part may add to or turn off some Part 91 requirements – either completely or partially.
Projects are opened to revise a CASR Part.
Part 91 open projects include:
Project OS 99/08 is part of a group of CASA projects associated with the flight operations regulations.
Consultation and project activities
A 2005-era version of Part 91 is currently in force. This version of Part 91 is solely focussed on the approval process and requirements for certain navigation authorisations:
- Part 91 of the Civil Aviation Safety Regulations 1998 (content only pertains to certain navigation authorisations)
- Subpart 91.U Manual of Standards Instrument 2005.
A completely new version of Part 91 that contains all the general operating and flight rules will come into force in 2021. This completely deletes the existing Part 91 laws referenced above. These future rules include:
- Civil Aviation Safety Amendment (Part 91) Regulations 2018
- Part 91 Manual of Standards (yet to be issued)
Advisory material provide advice and guidance to explain particular regulatory requirements of a CASR Part.
|AC 21-45(1)||Airworthiness Approval of Airborne Automatic Dependent Surveillance - Broadcast Equipment||February 2013|
|AC 21-36(1)||Global Navigation Satellite System (GNSS) Equipment: Airworthiness Guidelines||January 2013|
|Advisory Circular (AC) 91-23 (pdf 376.94 KB)||ADS-B for enhancing situational awareness||June 2020|
|AC 91.U-01||Navigation Authorisations||December 2014|
|AC 91.U-04 v1.0||Airworthiness requirements for performance based navigation||February 2015|
|AC 91.U-II-C-6(0)||Navigation Authorisations – RNP AR Operations||September 2012|
|AC 91.U-2(0)||Required Navigation Performance 10 (RNP 10) Operational Authorisation||November 2005|
|AC 91U-3(0)||Required Navigation Performance 4 (RNP 4) Operational Authorisation||November 2005|