Which agency must collaborate with the FAA for operations that affect navigable air operations?

The collaboration between the Federal Aviation Administration (FAA) and the National Park Service (NPS) stems from the need to manage the operations in and around national parks that can impact navigable airspace. The NPS is responsible for preserving the natural and cultural resources of national parks, and often this includes addressing the impacts of air traffic on these areas.

When certain activities, such as construction projects or changes in air tour operations, could affect the airspace over these lands or the aviation routes in close proximity, it becomes necessary for the NPS to collaborate with the FAA to ensure that aviation safety regulations are respected and that the scenic and environmental integrity of national parks is maintained.

It’s crucial for both agencies to work together to effectively balance air travel needs while also protecting the natural resources and tranquility of park areas for visitors. Their collaboration might involve assessing flight paths, noise pollution, and the potential impacts of flight operations on wildlife and visitors’ experiences.

In summary, the correct answer reflects the need for coordination between the FAA and the National Park Service specifically to manage how aviation activities intersect with navigable airspace over protected lands like national parks.