There is a story in AF about some controversy around whether a CASA-issued medical certificate should be required for private operations in CTA. The story says, among other things:
CASA has maintained for several years that pilots operating in CTA would always need Class 1 or Class 2 medical certificates...
When questioned about the potential restrictions that could apply to RPCs operating in CTA, a CASA spokesperson outlined several things that were under consideration.
"We’re still developing policy in this area, but a Class 2 medical certificate is required for pilots operating in controlled airspace under current arrangements..".
Bull****.
Someone should explain to CASA that Class D is CTA and that pilots without a medical certificate have been operating in it for decades.