Which agency oversees the operation of Special Use Airspace when it is not activated?

The agency responsible for overseeing the operation of Special Use Airspace when it is not activated is the controlling ATC facility. This facility plays a crucial role in managing air traffic and ensuring safety in the airspace and can provide guidance on the status and use of the airspace as required.

When Special Use Airspace is not activated, it remains under the jurisdiction of the local ATC, which monitors its usage and informs aircraft of any restrictions or special considerations associated with that airspace. While other organizations, such as the military command structure or the FAA, may have roles in defining or regulating such airspace, the controlling ATC facility is directly responsible for its operation when it’s inactive, ensuring that civilian flights can operate safely in proximity to these areas.