Implementing a performance based navigation plan
Performance based navigation (PBN) is an International Civil Aviation Organisation (ICAO) initiative and is aimed at improving safety, efficiency and reducing environmental impact of aviation operations.
Performance based navigation is ICAO's highest priority initiative and will affect all instrument flight rules (IFR) operations. It has two main components:
- Global harmonisation of IFR navigation specifications
- Approaches with vertical guidance (APV).
Australia's performance based navigation plan is based on extensive consultation between relevant Australian agencies and representatives of the industry.
The plan aims to:
- Provide a high-level strategy to transition Australian navigation from route-based navigation to area navigation
- Make sure the implementation of the navigation portion of the communication navigation and surveillance and air traffic management (CNS/ATM) system is based on clearly established operational requirements
- Avoid unnecessarily imposing requirements for multiple equipment on board aircraft or the establishment of multiple systems on the ground
- Avoid the need for multiple airworthiness and operational approvals for inter-regional and international operations
- Prevent commercial interests from superseding ATM operational requirements or generating unnecessary costs for Australian authorities, agencies and airspace users.
Australia’s concept for the transition to PBN is:
- Parallel availability of area navigation (RNAV) and required navigation performance (RNP) specifications in all classes of airspace
- APV enabled through barometric vertical navigation (Baro-VNAV).
We will transition to performance based navigation by:
- Maintaining our current area navigation capability
- Transitioning Australia’s unique specifications to ICAO PBN specifications (RNAV and RNP)
- Introducing limited APV capability through barometric vertical navigation
- Using the global navigation satellite system (GNSS) for the implementation of PBN
- Using a reduced network of terrestrial radionavigation aids (the backup network) to support non PBN arrivals non precision approaches at selected aerodromes.