Nice and simple in Oz Land:
A flight may be planned under the IFR by day to a destination aerodrome which is not served by a radio navigation aid without the requirement to provide for a suitable alternate aerodrome, provided that:
a. not more than SCT cloud is forecast below the final route seg-ment LSALT plus 500FT and forecast visibility at the destination aerodrome is not less than 8KM; and
b. the aircraft can be navigated to the destination aerodrome in accordance with para 19.1.