- Publications and resources
- Rules and regulations
- Safety management
- Licences and certification
- About us
Go to top of page
Project OS 99/08 - CASR Part 91: General operating and flight rules
Part 91 of the Civil Aviation Safety Regulations (CASRs) was initially made on 15 December 2005 to create Subparts 91.A, 91.D and 91.U, those rules taking effect on 20 December 2005. However, the general operating and flight rules applicable to all aircraft remain in various Civil Aviation Regulations 1988 (CAR), Civil Aviation Orders (CAO) and associated legislative instruments and have not yet been moved to the CASR structure or updated significantly in many years.
This project will implement a replacement CASR Part 91 and Part 91 Manual of Standards (MOS) that replaces the various Civil Aviation Regulations 1988 (CARs) and Civil Aviation Orders (CAOs) that relate to aircraft general operating and flight rules.
These new rules will effectively replace the operating rules for current 'private' operations and will supplement the operating rules applicable to aerial work and air transport operations (to be contained in the new CASR Parts 119, 121, 133, 135 and 138). The new rules will be supported by a number of Advisory Circulars (ACs).
The part will primarily consolidate and retain most of the existing rules with little change. However, a small number of new rules have been included to further ICAO compliance and enhance aviation safety. Some of these additions are:
- outcome based regulations relating to the use of Portable Electronic Devices (PEDs)
- restrictions on the simulation of certain emergencies in Instrument Meteorological Conditions (IMC) or at night
- requirement for cabin crew members for all flights carrying more than 19 passengers
- introduction of an approach ban for IFR flights in certain limited circumstances
- relaxation of supplemental oxygen requirements
- explicit requirement for the carriage of a journey log for international flights in line with the Chicago Convention.
This project is associated with CASR Part 91.
|Consultation updates in 2019|
|CASR Dictionary amendments||The changes to the CASR dictionary essential to understanding and interpreting the terminology used in Parts 91, 119, 121, 133, 135 and 138, are now available on the Federal Register of Legislation. Like the 6 CASR parts, these specific dictionary changes become effective on 25 March 2021. Industry is advised that further CAR and CASR dictionary changes will occur as part of the legislative package that repeals existing 1988 series Civil Aviation Regulations. This package is currently under development and is planned to be available later in 2019. The new legislative instrument is available at Civil Aviation Safety Amendment (Operations Definitions) Regulations 2019||17 April 2019|
|Consultation updates in 2018|
|Civil Aviation Safety Amendment (Part 91) Regulations 2018||Regulation made 6 December 2018||20 December 2018|
|Proposed CASR Dictionary amendments||
Below is a copy of the earlier public consultation draft changes to the CASR Dictionary. This will be updated as approved drafts become available.
|10 December 2018|
|Summary of consultation on NPRM 1511OS-2 - Proposed changes to the general operating and flight rules - Part 91 of CASR||This Summary of consultation on NPRM 1511OS-2 has been published.||29 August 2018|
|NPRM 1511OS-2 - Proposed changes to the general operating and flight rules - Part 91 of CASR||Comments close 29 April 2018.||28 March 2018|
|Consultation updates in 2015|
|CD 1511OS - Part 91 of CASR and associated MOS for general operating and flight rules||All comments should be submitted via the firstname.lastname@example.org by close of business 6 October 2015.||11 August 2015|
|Consultation updates in 1998|
|Project OS 99/08 - General operating and flight rules||This project was approved by the Executive Manager, Aviation Regulatory Services Branch February 1998.||1 February 1998|
Other Part 91 activities
The CASR Part 91 history page includes:
- other projects
Project OS 99/44 is part of a group of CASA projects associated with the flight operations regulations. These projects consist of:
- CASR Part 91
- CASR Part 119
- CASR Part 121
- CASR Part 133
- CASR Part 135
- CASR Part 138.
These rules will replace the current regulations and orders covering private, aerial work, charter and RPT operations.
Technical lead: Scott Watson
Policy manager: Manager, Flight Standards Branch