CASR Part 91 - General operating and flight rules
Part 91 of CASR applies to the operation of Australian civil aircraft operating in or outside Australian territory and the operation of a foreign registered civil aircraft flying into or out of, or operating in, Australian territory. The only sections of Part 91 currently enacted are those necessary for Subpart 91.U - navigation authorisations, which applies in relation to navigation authorisations held by Australian operators.
The remainder of Part 91, when implemented, will replace the various Civil Aviation Regulations 1988 (CAR) and Civil Aviation Orders (CAOs) that relate to general operating and flight rules, and will be supported by a number of advisory circulars (ACs). It will form a complete set of operating rules for current 'private' operations, and will supplement the operating rules applicable to corporate/business, air experience, aerial work, and air transport operations.
Part 91 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.
Who Part 91 affects
- private and professional pilots
- private and professional aircraft operators
- aircraft owners
- those who maintain, fuel and handle aircraft
- cabin crew
- loading personnel
- air display organisers
- air traffic services.
Subpart 91.U affects:
- air transport operators
- regional airlines
- corporate and private jet operators
- flight crew
- Airservices Australia.
Subpart 91.U post-implementation review (PIR)
Subpart 91.U was issued to provide a head of power for all types of navigation authorisations issued by CASA. Currently, Subpart 91.U only provides legislative backing for RNP 10 and 4, although 'placeholders' were included to accommodate other navigation specifications.
Standards development project AS 08/19 has been approved to review Subpart 91.U. Any amendments will be issued in draft form for public consultation. CASA will send notification via the airspace and aerodromes / flight operations and licensing standards mailing lists when proposed amendments are available for public consultation.
Key proposals for development of remaining Part 91
- strict control of portable electronic devices (PEDs)
- requirement for the pilot to plan to arrive with a specified minimum amount of fuel
- Restrictions on the simulation of certain emergencies in Instrument Meteorological Conditions (IMC) or at night
- altered requirement for the carriage of emergency locator transmitters (ELTs)
- requirement for cabin crew members for all flights carrying more than 19 passengers
- recurrent training and checking requirements for pilots for all operations of aeroplanes certified in the transport category with a maximum take-off weight (MTOW) above 8,640 kg
- changes to minimum operating heights to allow flight below 500 ft.
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)|
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.