CTA access paper - https://consultation.casa.gov.au/regulatory-program/pp-2412os/results/soconpp2412os.pdf
CTA access for RPC holders was going to happen regardless of med 5 feedback.
The huge political problem called Western Sydney made sure of that.
CASA CTA access press release
- https://www.casa.gov.au/about-us/news-media-releases-and-speeches/access-controlled-airspace-and-controlled-aerodromes-sport-and-recreation-pilots
"Under the proposal, pilots would need to meet established CASA requirements for:
English language proficiency
competency in using a radio to communicate with air traffic control
pilot competencies, including in navigation, flight planning, emergency, weather and airspace clearances
minimum medical requirements."
So looks like you may need radio, AELP and cross country nav as precursors to the CTA endorsement.
Wording of the medical requirement is a slight backdown from the original version of this statement that had Med 5.
The real question is when and neither CASA nor RAAus currently seem prepared to make a statement.