What is the altitude limit for Group 4 UAS?

The altitude limit for Group 4 Unmanned Aircraft Systems (UAS) is defined as being able to operate at altitudes greater than 18,000 feet Above Ground Level (AGL). Group 4 UAS are typically larger and have more advanced capabilities, which allow them to ascend to significant flight levels. This classification enables them to conduct operations in an airspace where air traffic is generally higher, accommodating various operational requirements, including surveillance, reconnaissance, and other specialized missions often associated with military applications.

The other options suggest altitude limits that are lower than those specified for Group 4, which do not align with the capabilities of these larger systems. The operational range of Group 4 is purposely above 18,000 feet to facilitate a broader range of missions and to integrate more effectively into existing air traffic systems, which are often stratified by altitude for efficiency and safety.