Interpreting ministerial directions to statutory corporations : what does a theory of responsible government deliver?

Problem of ministerial intervention in statutory corporations - assessment of the merits of rival approaches to the requirement of responsible government in the conduct of the affairs of statutory corporations - decision in Hughes Aircraft Systems v Airservices Australia seeks to identify the proper relationship between Parliament, the Executive and the statutory corporation - ability of a theory of responsible government to remain flexible is critical to the evolution of the Constitution.