Statutory Interpretation - Interpretating Across Statutes. International Air Transport Association v. Canadian Transportation Agency
In International Air Transport Association v. Canadian Transportation Agency (Fed CA, 2022) the Federal Court of Appeal cites the principle that different statutes are to be interpreted in accordance with the "presumption of legislative coherence" - wherever this is possible:
 The appellants also submit that the scope of the Agency’s regulation-making authority under section 86.11 of the CTA is further constrained by the presumption of legislative coherence. Pursuant to that well established presumption, overlapping provisions from different statutes must be interpreted so as to avoid conflict wherever this is possible: Thibodeau at paras. 89, 93 and 99; Barreau du Québec v. Quebec (Attorney General), 2017 SCC 56, 404 D.L.R. (4th) 201 at para. 73; Friends of the Oldman River Society v. Canada (Minister of Transport), 1992 CanLII 110 (SCC),  1 S.C.R. 3, 88 D.L.R. (4th) 1 at p. 38 [Oldman River]; P.-A. Côté, The Interpretation of Legislation in Canada, 4th ed. (Toronto: Thomson Reuters, 2011), at p. 365. What is true of statutes is also true of delegated legislation: regulations can neither conflict with their enabling legislation nor with any other act of the legislature: Oldman River, at p. 38; D.J.M. Brown & J.M. Evans, Judicial Review of Administrative Action in Canada (Toronto: Thomson Reuters, 2022), at § 15:61. Since the Montreal Convention has the force of law in Canada as its provisions have been incorporated into Canadian law by subsection 2(2.2) of the CAA, the appellants argue that Parliament must be presumed not to have authorized the adoption of delegated legislation pursuant to section 86.11 that would be inconsistent with the Montreal Convention.