Icarus
Got it now. But, without having read the relevant legislation, I would expect that a pretty much identical phrase appears regarding driving licences, boat licences and a whole range of other things from gun licences to explosives licences.
CASA stands alone in creating such convoluted, contradictory, ill defined medical requirements. It also stands alone in the bureaucratic structure it has created to administer this.
Other bodies find easy, cheap, efficient ways of dealing with these requirements. CASA pretty much stands alone in wanting to not delegate any authority and administer it all centrally in Canberra.
Don't believe me? Go and get a heavy truck licence (administered Nationally, but delegated to the state bodies). It involves medical requirements, skill & knowledge requirements and fit & proper person requirements. And a truck driver can do a whole lot more damage in a 40 tonne truck than I can in a 1.9 tonne light twin.