Part 139 applies to unscheduled passenger-carrying operations of air carriers operating aircraft configured for at least how many seats?

Part 139 of the Code of Federal Regulations specifies the certification requirements for airports that serve scheduled and unscheduled air carriers. It is particularly focused on ensuring safety standards are met for the operation of aircraft. For unscheduled passenger-carrying operations, Part 139 applies specifically to air carriers operating aircraft that are configured to have a minimum of 30 passenger seats.

This threshold ensures that larger aircraft, which pose a greater safety risk in terms of operations and emergencies, are subject to the more stringent safety and operational procedures outlined in Part 139. Ensuring compliance with these regulations helps maintain safety at airports while accommodating a variety of passenger services. Understanding this threshold is crucial for airport operations personnel to ensure they are aware of the regulatory framework governing airport safety and operations for specific aircraft configurations.