What is required before flying in Class F airspace designated as CYR?

Flying in Class F airspace designated as CYR (Cautionary Restricted Airspace) requires obtaining prior permission from the appropriate authority. This is essential because CYR airspace can contain activities that may be hazardous to other aircraft, such as military training or other operations with specific restrictions. Ensuring prior permission helps to maintain safety and coordination among different users of the airspace, allowing air traffic controller management and situational awareness.

In contrast, special dispensation, although related to permissions, typically refers to a more formal process that is not standard for navigating through CYR airspace. No additional requirements would imply that the airspace could be entered without any prior clearance, which could lead to dangerous scenarios. A valid flight plan, while beneficial for tracking purposes and communication with air traffic control, does not replace the need for prior permission needed to enter restricted airspace. Thus, securing prior approval is critical to ensure a safe and regulated flying environment in such airspace.