In mid-October 2023, a Sling light sport aircraft and a Piper Cherokee operating in the Moorabbin training area, south-east of Melbourne came within 100 metres of each other while both aircraft were flying at the same altitude.
The crew of the Sling reported to the ATSB they observed seeing the Cherokee pass in front of their aircraft in close proximity. ADS-B data obtained by the ATSB confirmed the Sling crew’s report, as well as showing just how close both aircraft came to colliding mid-air.
While both aircraft were equipped with ADS-B OUT, neither aircraft were equipped with ADS-B IN systems, and nor were they required to be. An ADS-B IN capability with a cockpit display or an electronic flight bag application showing traffic information can significantly enhance the situational awareness for a pilot, particularly when flying in non-controlled airspace.
“The ‘see and avoid’ principle for pilots has known limitations, and the use of ADS-B IN with a cockpit display or an electronic flight bag application showing traffic information greatly improves a pilot’s situational awareness and enhances the safety of their flight,” ATSB Chief Commissioner Angus Mitchell said.
“When flying in non-controlled airspace it’s important to have a high level of situational awareness, and one tool that can help you and other pilots is ADS-B IN.”
