Airspace & ChartsQuestion 39 of 100
On a sectional chart, a rural area is covered by a wide faded magenta shaded band, and no dashed or segmented lines cross the site. At what altitude does controlled Class E airspace begin over this location?
a.At the surface, because any magenta shading indicates a surface area
b.At 1,200 ft AGL, the standard floor used across most of the country
c.At 700 ft AGL, which is what the faded magenta shaded band depicts
d.At 14,500 ft MSL, the floor of Class E over unmapped terrain
Explanation
The soft magenta vignette on a sectional shows that the floor of Class E airspace is lowered to 700 ft AGL, usually to protect instrument approaches. A blue vignette is what marks a Class E floor of 1,200 ft AGL, and a dashed magenta line marks a Class E surface area. Because the Class E floor here is 700 ft AGL, the airspace below it is Class G and needs no authorization under §107.41.
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