The pilot in command of an aeroplane must:
(a) in the course of his or her preflight planning; and
(b) while en route;
take into account the alternate weather minima published by the Authority in
AIP-DAP applying at the destination aerodrome when determining:
(c) the amount of fuel required to conduct the operation; and
(d) whether or not an alternate aerodrome is required for the operation;
Civil Aviation Amendment Order no2 2002