How did the 1946 Bermuda Agreement between the United Kingdom and the United States influence later air-service agreements?

The 1946 Bermuda Agreement between the United Kingdom and the United States established a foundational model for international air-service agreements that has been widely adopted by other nations.1

Because efforts to create a multilateral agreement on traffic rights were unsuccessful, states have historically relied on bilateral agreements to manage commercial air transport. The Bermuda Agreement provided a template for these bilateral arrangements by defining key operational frameworks, including:1

• Route Specification: Defining the specific routes to be served by airlines.1
• Capacity Principles: Establishing guidelines for the capacity of agreed services, calculated as the frequency of service multiplied by the carrying capacity of the aircraft.1
• Fare Regulation: Outlining procedures for government approval of fares and tariffs, often requiring airlines to consult through the International Air Transport Association (IATA) before submission.1

While the formal "Bermuda-type" agreement became the industry standard, these arrangements are frequently supplemented by confidential memoranda that impose additional specific restrictions on operations.1