Find The Floor Of Controlled Airspace

In general you can only fly your drone in uncontrolled airspace below 400 feet above the ground agl.

Find the floor of controlled airspace. Other airspace is considered uncontrolled in the sense that air traffic controllers are not directing air traffic within its limits. A generic term that covers the different classification of airspace class a class b class c class d and class e airspace and defined dimensions within which air traffic control service is provided to ifr flights and to vfr flights in accordance with the airspace classification. Class b airspace is used to control the flow of traffic around major airports. It is the opposite of uncontrolled airspace.

The elevation of sandpoint airport is 2131 ft msl as indicated by the airport data. The floor of controlled airspace needs to be in terms of msl which would be the airport elevation the start of the class e airspace or 2131 ft msl 700 ft agl 2831 ft msl. As the circles move further away from the center airport the floor of the airspace increases while the ceiling of the airspace remains the top of the airspace. The controlled airspace around sandpoint begins at 700 ft agl.

The airspace is charted on a vfr sectional chart with a series of blue lines. Class b airspace is controlled airspace so you ll need to have authorization to fly here. Neither vfr visual flight rules nor ifr instrument flight rules aircraft need an atc clearance to operate in class g airspace. The broadest distinction that one needs to know about the national airspace is the difference between controlled uncontrolled and special use airspace.

What is the floor of controlled airspace along v15. The dimensions of the control zone where class e airspace exists at the surface figure 3 area 3 is a 5 statute mile radius from the center of the airport and vertically from the surface to 14 500 feet msl. The correct answer was 1200 ft agl. Class b airspace is measured in mean sea level msl.

Refer to the figure 21 area 2 below. Controlled airspace is airspace of defined dimensions within which atc services are provided. How to find it. Like class e airspace you can fly through class g airspace at airports the terminal environment and while en route.

I want to thank 757toga and jscarry for the help on this. What is class g airspace. Class e airspace is extended to the surface so that the flight is protected when it emerges from the cloud at area 3. However class g airspace isn t controlled.

Within these blue lines the floor and the ceiling of the class b airspace is defined. Class e airspace with the floor starting at 1200 feet above the surface. Controlled airspace is established mainly for three different reasons.