R v Poole; Ex parte Henry [No 2]

The case of *R v Poole; Ex parte Henry [No 2]* concerned a charge laid against Henry Goya Henry for contravening the Air Navigation Regulations. Henry was accused of flying an aircraft at a height lower than 2,300 feet over Mascot aerodrome, outside of taking off or landing. The charge was brought by Alfred Alderson Poole, the senior control officer at the aerodrome. The central dispute revolved around the validity of Rule 51(1) of the Air Navigation Regulations, which stipulated the minimum flying height over an aerodrome, and whether this regulation was authorised by the Air Navigation Act 1920-1936 and consistent with the International Convention for the Regulation of Air Navigation. The matter was heard by the Full Court of the High Court of Australia.

The legal issues before the court were whether Rule 51(1) of the Air Navigation Regulations was ultra vires the Air Navigation Act 1920-1936, and consequently, whether it validly applied to the appellant. Specifically, the court had to determine if the regulation, which prohibited flying at a low altitude over an "aerodrome" (defined to include the landing area, neutral zone, and building area), was a valid means of carrying out and giving effect to the International Convention. The Convention, in its relevant provision, prohibited low flying only over a "landing area." Further questions arose regarding the interpretation of the Acts Interpretation Act 1901-1937 and whether it could be used to limit the scope of the regulation to render it valid.

A majority of the High Court (Rich, Starke, Evatt, and McTiernan JJ., with Latham C.J. dissenting) held that Rule 51(1) was a valid regulation for the purpose of carrying out and giving effect to the Convention. The reasoning was that while the Convention specifically prohibited low flying over a "landing area," a regulation prohibiting low flying over the broader concept of an "aerodrome" (which encompassed the landing area) was a reasonable and appropriate method to achieve the Convention's objective of ensuring safety around landing zones. The majority considered that the Convention did not mandate a strict reproduction of its rules but allowed for appropriate measures to give effect to its intent. Dixon J. further held that, when construed under section 46(b) of the Acts Interpretation Act 1901-1937, Rule 51(1) validly applied to aerodromes used for international and inter-State air navigation.

The appeal was dismissed, and the order nisi for prohibition was discharged. The majority found that the regulation, despite its broader scope than the specific provision in the Convention, was a valid exercise of the power to legislate for the control of air navigation and to give effect to international obligations.