Sectional Charts Flashcards
What does “UC” mean next to an obstruction?
Unconfirmed. The position and height are unverified.
What does an L (no asterisk) mean in the airport information section of a sectional?
Lights from sunset to sunrise.
In a communications box on a sectional, what does an underlined frequency mean?
No voice on that channel.
How is Class B airspace represented?
Solid blue line.
How is Class E airspace represented?
It’s not shown on the sectional. If there is no other airspace, it is 1,200’ agl unless otherwise noted.
What is a magenta line that is solid on one side and shaded on the other?
Class E airspace above 700’ agl.
There are two numbers beside an obstruction. What does the top one mean?
Altitude MSL. It is what your altimeter will read if you hit it.
What does it mean if an airport symbol is an empty circle?
Other than hard surface runway.
How is Class D airspace represented?
Dotted blue line.
What does “CT” mean in an airport information section on a sectional?
It means there is a control tower.
Explain the two numbers beside an obstruction on a sectional.
The top number is the altitude MSL — what your altimeter will read if you hit it. The bottom is the height of the obstruction — how far you will fall if you hit it.
What does an open dot beside a runway mean?
There is a VOR or VORTAC nearby.
What does a large number or fraction in a dashed blue square mean?
It is the ceiling (or floor and ceiling) of an airspace.
What is the difference between large and small obstruction symbols (regardless if they’re grouped or have lights)?
Large are taller than 1,000’ agl. Small are shorter than 1,000’ agl.
How is Class C airspace represented?
Solid magenta line.
What does the number mean at the end of the airport information section line that includes lighting information (see image)?
Length of the longest runway.
Four tabs around the airport symbol.
The airport has services.
What is a blue line that is solid on one side and shaded on the other?
Class E airspace above 1,200’ agl.
