FAA Part 107 Drone Practice Test

When inspecting towers southwest of Sioux Gateway (SUX), what is the maximum altitude allowed above ground level (AGL)?

1. 400 feet AGL

2. 402 feet AGL

3. 802 feet AGL

4. 1000 feet AGL

The correct answer is: 802 feet AGL

The correct answer is based on understanding the broader regulations surrounding altitude limits for drone operations. Under Part 107 of the FAA regulations, the maximum altitude for drone flights is generally limited to 400 feet above ground level (AGL) unless you are flying within a certain proximity to structures. In this scenario involving tower inspections, special provisions allow for operation above the standard 400 feet limit. Specifically, when operating in close proximity to a tower, the altitude can be extended up to 400 feet above the height of the tower, plus 400 feet AGL. For a very tall structure, this could result in operational limits that allow for much higher altitudes, such as 802 feet AGL or more, depending on the height of the tower in question. Therefore, the maximum altitude allowed for a drone inspection near these towers, which could be significantly taller than average, is set at 802 feet AGL, adhering to the guidelines that pertain to flying around tall structures while ensuring safe and compliant operations.