What is the maximum altitude a UAS may fly without special authorization?

The maximum altitude that a UAS (Unmanned Aircraft System) may fly without special authorization is 400 feet AGL (Above Ground Level). This regulation ensures safe operation within the National Airspace System, allowing UAS pilots to operate below the minimum altitude for manned aircraft, which typically fly above 500 feet AGL. By limiting UAS operations to 400 feet AGL, the regulations help to minimize the risk of collision with manned aircraft and maintain safe separation in shared airspaces.

This altitude limit also simplifies the regulatory landscape for UAS operators, as it provides a clear boundary within which they can operate without needing additional permissions or waivers. Staying within this parameter is crucial for compliance with FAA regulations and helps ensure the safety of all airspace users. Understanding this altitude restriction is essential for any UAS remote pilot preparing for practical operations or examinations.