The Civil Aviation Authority (CAA) in the UK regulates all aspects of civil aviation to ensure the safety, security, and efficiency of air travel. Its core functions include setting safety standards for airlines, aircraft, and airports, licensing aviation personnel, and managing air traffic services. The CAA also handles consumer protection issues, ensuring passengers are treated fairly, and addresses environmental concerns by promoting sustainable aviation practices. Additionally, it investigates aviation incidents, oversees economic regulation of airports, and ensures compliance with international aviation regulations, thus supporting a robust and secure aviation industry in the UK.