(1) Subject to section 22:
(a) the ATSB may investigate any transport safety matter; and
(b) the ATSB must investigate a transport safety matter if directed in writing by the Minister to do so.
Note: See also section 11, which puts constitutional limits on the exercise of powers and functions under this Act.
(2) The ATSB may discontinue an investigation at any time.
(3) The ATSB must, within 28 days of discontinuing an investigation, make publicly available, by electronic or other means, a statement setting out the reasons for discontinuing the investigation.