(a) there is evidence that the holder of a licence or a qualification is not adequately performing his or her duties (whether because of lack of proficiency, injury, illness or for any other reason); and
(b) it is necessary, in the interests of the safety of air navigation, to require the holder to demonstrate his or her proficiency or fitness to perform those duties;
CASA may, at a reasonable time and on reasonable notice, direct the holder to undertake:
(c) an appropriate examination or performance assessment; or
(d) a medical assessment by a designated aviation medical examiner.
(2) In paragraph (1)(d):
"medical" includes psychological and psychiatric.