What is the maximum altitude for a sUAS?

The maximum altitude for a small Unmanned Aircraft System (sUAS) is 400 feet above ground level (AGL), or within 400 feet laterally from a structure. This regulation is established by the Federal Aviation Administration (FAA) as part of its guidelines for the safe operation of sUAS. The purpose of this altitude limit is to minimize the risk of collision with manned aircraft and to maintain safe separation from other airspace users.

When flying within 400 feet laterally from a structure, operators are allowed to fly above 400 feet AGL, up to the height of the structure plus 400 feet, provided that the operator is operating within the associated lateral boundary. This flexibility acknowledges that there may be situations where an operator needs to navigate around a structure while ensuring safety.

The other options listed do not align with the established FAA regulations for maximum altitude, meaning they are incorrect. The regulations are designed to ensure safe operation in the National Airspace System while still allowing for some degree of operational flexibility within the confines of the law.