As already mentioned, the proceedings are by way of application for review under the Judicature Amendment Act 1972 and are directed against certain findings in the Report, to which we have referred. The applicants claim that those findings are invalid, in excess of jurisdiction or made in circumstances involving unfairness or breach of natural justice. They seek declarations to that effect and orders setting aside the findings and quashing the order that Air New Zealand pay $150,000 as a contribution to the public cost of the inquiry. It is necessary to consider whether under the Act the Court has jurisdiction to grant such relief in this case. By ss. 3 and 4 of the Act relief may be granted only where a "statutory power" is involved. That term includes a "statutory power of decision". Since liberalizing amendments made in 1977, "statutory power" includes power conferred by or under any Act "to make any investigation or inquiry into the rights, powers, privileges, immunities, duties, or liabilities of any person" and "statutory power of decision" includes power conferred by or under any Act "to make a decision ... affecting" any such rights, powers, privileges, duties or liabilities. Generally the relief available is confined by s. 4 to that which the applicant would have been entitled to in any one or more of the proceedings for mandamus, prohibition, certiorari, declaration or injunction; but there is a relevant exception in s. 4 (2) whereby if the applicant is entitled to an order declaring that a decision made in the exercise of a statutory power of decision is unauthorized or otherwise invalid the Court may set aside the decision instead. The first question as to jurisdiction is therefore whether, apart from the 1972 Act, the applicants could have obtained relief by any of the proceedings mentioned. The Commission having ceased to exist, it would be too late to apply for prohibition or an injunction against the first respondent and mandamus would also be inappropriate. The decision of this Court in _Reynolds_ v. _Attorney-General_ (1909) 29 N.Z.L.R. 24, 37-38, suggests that once the report has been forwarded to the Governor-General it may be permanently beyond the reach of certiorari; this is perhaps a corollary of the view, to which we referred in the judgment concerning discovery in _Environmental Defence Society Inc._ v. _South Pacific Aluminium Limited_ (C.A. 59/81, judgment 15th June 1981), that a prerogative remedy may not lie against the Sovereign's representative.