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CASR Part 91 - General operating and flight rules
The proposed Part 91 of the Civil Aviation Safety Regulations 1998 (CASR) and its associated manual of standards (MOS) will consolidate the general operating and flight rules for Australian aircraft.
Part 91 replaces more than one hundred documents—such as regulations, orders, supporting instruments and exemptions—combining them into just two documents.
Primarily, it will retain the existing rules. However, there are a small number of new rules which are designed to enhance operational flexibility, enhance safety and increase compliance with International Civil Aviation Organization standards.
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. Before they come into effect, CASA expects to update AIP to make it easier for you to understand the rules and comply with them.
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.
For example, the requirements for carriage of documents under Part 121 will replace the Part 91 requirements in this area.
Part 91 of was initially made on 15 December 2005 to create Subparts 91.A, 91.D and 91.U, with those rules taking effect on 20 December 2005. Subpart 91.U can be found in volume 2 of the Civil Aviation Safety Regulations 1998.
Manual of Standards
The Subpart 91.U Manual of Standards Instrument 2005 is available on the Federal Register of Legislation.
|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|
|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|
Public consultation is open until 29 April 2018. The schedule to make the rules will be confirmed following consultation but the target is December 2018. Part 91 will be made together with Parts 119, 121, 133, 135 and 138.
The schedule for commencement and transition arrangements will be determined following public consultation. CASA anticipates having all implementation products such as processes and guidance material available at an appropriate time prior to the commencement date. The regulation will not take effect until implementation is complete.
Part 91 history
The Part 91 history includes project and consultation activities conducted in relation to Part 91, including Subpart 91.U.
View the key proposals for the initial development of Subpart 91.U.