The whole point of RNP is that it's not navaid specific. However the RNP concept has not been adopted the same way in all countries so for example my Aussie studes have to have GNSS to fly rnav arrivals and approaches because it's specified on the plate as RNAV(GNSS). It would be great if we could have just one set of rules worldwide. Perhaps we should create an International Civil Aviation Organisation to set regs that we all stick to.
