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Project AS 16/06 - Automatic Dependent Surveillance - Broadcast (ADS-B) equipment suitable for voluntary fitment and use in aircraft operated in accordance with the Visual Flight Rules (VFR)
ADS-B is the cornerstone for Australia's transition to satellite technology based surveillance. The technology has already enabled a vast increase in the air traffic surveillance coverage over Australian territory - resulting in significant increases in operating and safety efficiencies.
CASA has promulgated various requirements and standards concerning the carriage and use of ADS-B equipment in aircraft operated in accordance with the Instrument Flight Rules (IFR). While current requirements apply only in certain parts of Australian controlled airspace, from 2 February 2017 all IFR operated aircraft in all Australian airspace must carry and use suitable ADS-B equipment.
No ADS-B fitment mandate applies to aircraft in the VFR category. While some VFR aircraft operators have chosen to equip their aircraft with IFR-compliant ADS-B equipment, the cost of such equipment is a disincentive for more widespread voluntary fitment.
The Australian Strategic Air Traffic Management (ASTRA) group - the original industry proponent of the ADS-B program - has identified several options for reduced cost ADS-B systems. These systems may not be suitable for aircraft-to-aircraft ATC separation purposes, but use of these systems in VFR aircraft would have significant benefits. These include:
- improved traffic information
- flight watch and Search and Rescue alerting
- improved collision avoidance through being visible to ATC or aircraft equipped with ADS-B IN
- improved access to controlled airspace - on the basis that it is easier for ATC to form a clearance for a VFR aircraft if its exact position is observed on the ATC surveillance system.
VFR aircraft would also benefit from the in-built safety alerts provided by the ATS surveillance system, including Short Term Conflict Alerts (STCA).
However, CASA's current suite of ADS-B requirements and standards do not recognise or readily accommodate reduced cost ADS-B systems or those that do not meet the design authorisation requirements of a Technical Standard Order (TSO). Some changes to this suite will be necessary in order to gain the identified benefits.
The objectives of the project are:
- In consultation with industry and relevant technical experts, review the ASTRA proposal for standards for ADS-B fitment in VFR aircraft.
- Identify appropriate performance standards for suitable ADS-B equipment that can be voluntarily fitted and used operationally in VFR aircraft.
- Make any necessary changes to CASA's regulations, standards and advisory material to accommodate suitable ADS-B equipment for voluntary installation in VFR aircraft.
- Civil Aviation Order (CAO) 20.18
- Part 21 of CASR
- Part 91 of CASR
Project Leader: Jan Goosen
Project Sponsor: Manager, Flight Standards Branch
|Consultation updates in 2017|
|DP 1701AS – Frequency use at low level in Class G airspace||Comments close 23 Febuary 2018.||15 December 2017|
|Consultation updates in 2016|
|AS 16/06 - Automatic Dependent Surveillance - Broadcast (ADS-B) equipment suitable for voluntary fitment and use in aircraft operated in accordance with the Visual Flight Rules (VFR)||Project approved.||20 July 2016|