What type of clearances is ZAE responsible for when FDIO is unavailable?

When FDIO (Flight Data Input/Output) is unavailable, ZAE (a specific air traffic control center) must provide full departure clearances to ensure that pilots receive all necessary information for a safe and efficient takeoff. Full departure clearances include crucial data such as the aircraft's initial route, altitude assignments, and other pertinent instructions that are essential for flight operations.

Providing full departure clearances helps maintain flight safety and is a critical component of air traffic management. These clearances support aircraft in their transition from ground operations to airborne activities, ensuring that they are effectively integrated into the air traffic system. Proper communication of this information is vital, particularly when automated systems like FDIO are not functioning.

The other options focus on different aspects of air traffic control procedures. For instance, visual flight rules clearances pertain to only a specific type of navigation which doesn’t cover the full scope of clearance needs, while flight plan submissions and emergency clearances do not encompass all the necessary components required for departure operations within ZAE's responsibilities.