Which regulation governs airport operations in the United States?

The regulation that governs airport operations in the United States is 14 CFR Part 139. This specific regulation outlines the certification requirements for domestic airports that serve scheduled and unscheduled air carrier operations. It emphasizes safety standards regarding airport design, maintenance, and operational procedures, ensuring these airports are adequately equipped to handle aircraft activities while minimizing risks to public safety.

While other regulations like 49 CFR Part 1542 pertain to airport security, 14 CFR Part 91 focuses on general aviation, and 49 CFR Part 150 deals with airport noise compatibility planning, they do not specifically address the comprehensive operational standards required for certified airports as 14 CFR Part 139 does. Therefore, this regulation is central to understanding and managing airport operations effectively and safely in the U.S.