The ATSB is investigating a near collision involving an Airbus EC135 helicopter, registered VH‑UJB, and an Aero Commander 690‑A aircraft, registered VH‑ATF, about 45 km west‑north‑west of Warrnambool Airport, Victoria, on 12 March 2025.
During aerial firefighting operations, the crew of the Airbus EC135 detected the Aero Commander 690-A in close proximity on TCAS. No radio calls were heard from the 690-A and the EC135 manoeuvred to establish separation.
The ATSB has commenced the examination and analysis of the initial evidence collected.
To date, the ATSB investigation has included:
- interviewing the crew onboard each of the aircraft
- analysis of flight recorder and air traffic surveillance data
- review of related procedures.
In the course of the investigation, the ATSB considered there to be a reasonable likelihood of limitations in risk controls relevant to the occurrence. Examination of these factors represent a significant increase in the scope of this investigation, and it has been upgraded from Short to Defined as a result (the ATSB's different levels of investigation are detailed here).
The continuing investigation will include further analysis of:
- related procedures
- related occurrences.
A final report will be released at the conclusion of the investigation. Should a critical safety issue be identified during the course of the investigation, the ATSB will immediately notify relevant parties, so that appropriate safety action can be taken.