I've been reading the grant information for the ADSB rebate. Its not at all straight forward on the face of it. You need to provide a compelling application for it to be accepted!
You need for the purchase to have been made
AFTER 20th December 2021.
The crux of what you need on the form is here:
https://business.gov.au/-/media/gran...481FB9C7EE7268
Automatic Dependent Surveillance (ADS-B) Broadcast Rebate Program | business.gov.au