17Pre‑cleared flights

17  Pre‑cleared flights  (1) The Minister may, in writing, declare a specified flight by an aircraft on a specified day between a specified foreign country and Australia to be a pre‑cleared flight for the purposes of this Act.  (2) The Minister may declare, in writing, a specified class of flights conducted by a specified air transport enterprise or by another specified person to be pre‑cleared flights for the purposes of this Act.  (3) A particular flight to which a declaration under subsection (1) or (2) applies is not a pre‑cleared flight if an authorised officer decides, before the passengers on it disembark in Australia, that it is inappropriate to treat it as such.