Fixed Defence Air Traffic Control Surveillance Sensors

Project AIR5431 Phase 2, Fixed Defence Air Traffic Control Surveillance Sensors (FDATCSS), will introduce 9 new fixed Air Traffic Control (ATC) sensors and three independent Automatic Dependant Surveillance-Broadcast (ADS-B) ground stations. The fixed ATC sensor system is made up of a mix of sensor (primary and secondary surveillance radars) and processing hardware, software, radar towers, radomes, and associated electronic systems.

These new fixed Hensoldt Airfield Surveillance Radar – Next Generation (ASR-NG) systems will replace existing Australian Defence Air Traffic System (ADATS) radars at RAAF Bases Darwin, Townsville, Amberley, Williamtown, and Pearce/Gin Gin, Naval Air Station Nowra and Alenia radars located at RAAF Bases East Sale and Tindal and the Army Aviation Centre Oakey. The 3 independent ADS-B ground stations will supplement the Defence fixed sensor coverage and other Airservices Australia sensors at RAAF Bases Darwin, Townsville and Army Aviation Centre Oakey.

The associated Support system consists of spares, publications and an Operational Maintenance Trainer located at RAAF Amberley.

At the end of 2023, the Project and its industry partner Hensoldt Sensors GmbH had delivered two sensor systems into operational service at RAAF Base Williamtown and Army Aviation Centre Oakey. Another 4 systems will be delivered into operational service in 2024, at RAAF Bases Amberley, East Sale, Tindal and Naval Air Station Nowra.


Original Planned

Achieved / Forecast


Project year of Commencement


Dec 2014

2nd Pass Approval

Initial Materiel release (IMR)

Jan 2019

Aug 2018


Initial Operational Capability (IOC)

Feb 2019

Sep 2018


Final Materiel Release (FMR)

Oct 2021

Jul 2020


Final Operational Capability (FOC)

Nov 2021

Aug 2020


Content is current as at February 2024.