Do I need a licence to fly as a student pilot?

You don’t need a licence to fly as a student because while you are learning you will be under the supervision of a flight instructor and your flying school at all times, including when you are flying solo. However, to fly solo you need to have an aviation reference number, which you can obtain from CASA, and you need to provide CASA with your proof of identity. To fly solo, you also need to hold a medical certificate.