What body is responsible for setting international civil aviation standards?

The body responsible for setting international civil aviation standards is the International Civil Aviation Organization (ICAO). This specialized agency of the United Nations plays a crucial role in establishing the rules and regulations that govern international air navigation and develop the principles and techniques of international air transport.

ICAO creates policies and standard practices that member countries are encouraged to adopt to ensure safe and orderly aviation operations across the globe. This includes a wide range of regulations covering flight operations, safety, security, and environmental standards that are essential for maintaining consistency and safety in international aviation operations.

Other choices such as the Civil Aviation Authority (CAA) and Met Service serve different roles. The CAA typically focuses on national aviation regulatory frameworks and enforcing local aviation laws but does not set international standards. The Met Service provides meteorological support and weather information, which is vital for flight safety but does not involve the setting of aviation standards.