(1) For paragraph 98(5A)(a) of the Act, CASA may, by legislative instrument, prescribe, for multi - crew aircraft:
(a) the type ratings that may be granted for multi - crew operation; and
(b) the aircraft models that are variants of each other; and
(c) in relation to each variant--the variants for which differences training is required; and
(d) the type ratings for which the flight review or instrument proficiency check requirements may be met by completion of a single flight review; and
(e) the type ratings for which the instrument proficiency check requirements may be met by completion of a single instrument proficiency check.
(2) For paragraph 98(5A)(a) of the Act, if 2 or more aircraft models are variants of each other, CASA may, by legislative instrument, prescribe that the models are no longer variants of each other only if satisfied that:
(a) the complexity of one of the models' systems; or
(b) a difference in their performance or handling characteristics;
requires the provision of additional flight training to enable a person to
pilot an aircraft of that model safely.