FAA Part 107 Drone Practice Test

How is the MSL value represented compared to AGL value in numbers?

1. 2049 MSL and 1149 AGL

2. 1149 MSL and 2049 AGL

3. 2049 MSL and (1149) AGL

4. (1149) MSL and 2049 AGL

The correct answer is: 2049 MSL and (1149) AGL

The correct representation of MSL (Mean Sea Level) compared to AGL (Above Ground Level) in option C is understood through the relationship between the two measurements. MSL indicates the altitude of a location relative to sea level, while AGL measures the altitude relative to the surface of the ground at that specific location. In option C, the numbers provided show 2049 MSL, which indicates that the object is situated at an altitude of 2049 feet above sea level. The notation (1149) AGL signifies that the height of the object above the ground is 1149 feet. This representation is accurate because it maintains a clear understanding that the elevation above sea level is higher than the elevation above ground level. This distinction is essential for drone pilots as it impacts safety, flight planning, and regulatory compliance. For example, if a drone is flying at 2049 MSL while the terrain is elevated, the AGL value would be lower, which may affect how closely the drone can fly to obstacles, legal flight altitude minimums, or navigation challenges.