From the MOS, albeit not updated since 2010.
• Special Pilot Licence (SPECPLA/H/G)
This is a longer-term authorisation permitting the holder to engage in private day VFR operations. The SPECPL is valid only as long as the overseas pilot’s licence is valid. If the overseas medical certificate expires, the holder may apply for an Australian medical certificate. May be used to gain additional aircraft endorsements but not for flying training. Instrument ratings (other than PIFR ratings) and Night VFR ratings cannot be put on or used on a special pilot licence.
➜Note: CASA plans to phase out the SPECPL. Therefore, overseas pilots seeking an authorisation for three months or more should be encouraged to apply for an Australian flight crew licence.
Transitional arrangements may require the SPECPL holders to pass an exam and flight test for the issue of a PPL.