Identification On Sectional Charts

Question 1

What does a blue vignette line indicate on a sectional chart?

Answer 1

Class E airspace starts at 1,200′ AGL inside the blue feathered area and extends all the way to the Class A airspace above. The areas outside of the hard edge of the blue line are Class G airspace from the surface to 14,500′ MSL, and then Class E above that

Question 2

What does a magenta vignette line indicate on a sectional chart?

Answer 2

Class E airspace with a floor of 700’ AGL

Question 3

What does a segmented magenta line indicate on a sectional chart?

Answer 3

Class E airspace with a floor at the surface (SFC)

Question 4

What does a segmented blue line indicate on a sectional chart?

Answer 4

Class D airspace.

Floor is at the surface.
Ceiling is typically 2500’ AGL, rounded to the nearest 100’. MSL ceiling is notated on the chart.

Question 5

What does a solid magenta line indicate on a sectional chart?

Answer 5

Class C airspace

Typically extends from surface to 4,000’ AGL. MSL ceiling noted on chart.

Question 6

What does a solid blue line indicate on a sectional chart?

Answer 6

Class B airspace.

Typically arraged in concentric circles. The floor and ceiling for each concentric circle increase as they radiator outward, with values noted on the chart. Resembles an upside-down wedding cake.