- Publications and resources
- Rules and regulations
- Safety management
- Licences and certification
- About us
Go to top of page
Surveillance for communication, navigation systems and air traffic management
Surveillance technology (CNS-ATM) has advanced from the legacy radar based solutions. To increase the area of Australia that is covered, global navigation satellite system (GNSS) based automatic dependent surveillance - broadcast (ADS-B) is being implemented.
Another technology that is being used in some parts of Australia is multi-lateration. This system uses the existing transponder installed in the aircraft and a network of ground receivers to determine the aircraft's position by triangulation.
ADS-B equipment mandates
ADS-B equipment mandates have been progressively implemented in Australia since 2007. The final mandate, requiring all aircraft operating under the instrument flight rules (IFR) to be equipped with 1090 MHz extended squitter ADS-B, took effect on 2 February 2017. View the history of ADS-B equipment mandates. Aircraft in breach of the mandate may incur a fine for non-compliance.
An application for a general ADS-B exemption will incur a regulatory fee. An exemption will only be granted in extenuating circumstances and where an acceptable safety case is provided. More about the application process can be found on the resources page.
Temporary authorisation instruments
CASA has previously provided conditional, temporary relief against the ADS-B equipment mandates for a small number of non-equipped aircraft as each of the regulatory requirements have been introduced.
On 2 February 2017, two new authorisation instruments took effect:
Operators of non-equipped IFR aircraft utilising one of the above instruments will need to equip with ADS-B avionics, fly under the visual flight rules (VFR) only, or retire any unequipped aircraft by the instrument’s expiry date.
For CNS/ATM queries email: firstname.lastname@example.org, or phone 131 757 and request to speak to the CNS team.