A remote pilot plans to operate at 350 feet AGL near a small airport. The sectional chart shows a dashed magenta circle around the airport boundary. Is ATC authorization required, and why?
Why →
A dashed magenta line on a sectional chart indicates Class E airspace that extends from the surface upward. This is found around airports that have instrument approach procedures but no operating control tower. Under § 107.41, Class E surface areas require ATC authorization the same as Class B, C, and D. A solid magenta (shaded) line indicates Class E beginning at 700 feet AGL, which is a different pattern.The trap →
Choices B and C swap the chart vocabulary. Dashed magenta (surface Class E) and shaded magenta (700 AGL Class E) look similar and are the most commonly confused symbols on the sectional.SOURCE → 14 CFR § 107.41; FAA Aeronautical Chart User's GuideCHECKED APR 21ACS II.A.K2MED