FAA Part 107 Drone Practice Test

What is the height of the highest obstacle when launching a small UA 2 NM northeast of Hertford?

1. 399 feet MSL

2. 500 feet MSL

3. 500 feet AGL

4. 700 feet AGL

The correct answer is: 500 feet AGL

To determine the correct answer about the height of the highest obstacle when launching a small unmanned aircraft (UA) 2 nautical miles northeast of Hertford, it’s important to understand the terminology used in the options. The term AGL stands for Above Ground Level, while MSL refers to Mean Sea Level. When evaluating the obstacles in the immediate vicinity, height measurements represented in AGL are vital, especially for drone operators who need to maintain safe clearance from obstacles during flight. The correct answer indicates that the highest obstacle is measured from the ground level where the drone will be operating, rather than from sea level. This approach is crucial for understanding potential hazards during the flight, particularly in relation to the terrain and other structures in the area. In urban or developed areas, knowing the heights of obstacles in AGL helps a drone operator plan their flight path to ensure compliance with regulations and safety guidelines, as drones are required to maintain a certain altitude above any obstacles within the vicinity. As such, the correct choice accurately reflects the operational environment of a small UA in relation to the specific regional altitudes applicable to drone operations. Understanding this distinction between AGL and MSL is a key component of operating within FAA regulations and ensuring safe flying practices.