Which part of 14 CFR Part 139 covers the operational requirements for commercial service airports?

The operational requirements for commercial service airports are detailed in Subpart D of 14 CFR Part 139. This section specifically outlines the standards that commercial service airports must adhere to in order to ensure safe and efficient airport operations. These operational requirements include aspects such as airport management, safety procedures, and maintenance protocols that impact the overall functioning of the airport environment for both passengers and aircraft.

Understanding Subpart D is crucial for airport personnel because it establishes the framework that governs day-to-day operations, ranging from emergency preparedness to security measures, ensuring compliance not only with federal regulations but also with industry best practices. Thus, knowing the content and implications of Subpart D equips airport operators with the knowledge necessary to maintain safety and operational integrity at commercial service airports.