What is the highest altitude limit for a Group 4 UAS?

The correct altitude limit for a Group 4 UAS (Unmanned Aircraft Systems) is greater than 18,000 feet above ground level (AGL). Group 4 UAS are typically designed for more advanced missions, often requiring significant operational capabilities that include the ability to operate at higher altitudes. This allows them to avoid obstacles and conduct operations in airspace that many smaller UAS cannot access.

To put this into context, UAS classification is generally based on their weight, operational capabilities, and the airspace they can access. Group 4 encompasses a range of UAVs that can be utilized for more complex and demanding missions, which is why they are permitted to operate above the 18,000-foot threshold. Lower altitude limits, such as those mentioned in the other options, apply to smaller or less capable systems that do not have the same operational requirements or certifications needed for higher altitudes. Therefore, Group 4 UAS being able to operate above 18,000 feet allows for a wider range of applications and missions in various environments.