If you need to ensure your flight plan is closed at a non-military field, who should you contact?

When confirming the closure of a flight plan at a non-military field, contacting a Flight Service Station (FSS) is the appropriate action. FSS personnel are responsible for managing flight plans, providing pre-flight briefings, and ensuring that pilots have all necessary information about their routes and any relevant changes. They are the designated points of contact for flight plan services and are equipped to officially close flight plans after pilots land.

Air Traffic Control (ATC) primarily works with active air traffic management and may not formally close flight plans for flights that do not operate within their jurisdiction. The local airport authority typically manages airport operations and services but does not handle flight plan closures. A nearby military base may have its own protocols and communications but is not involved in the process of closing civilian flight plans. Thus, FSS serves as the correct contact for managing flight plans in this context.