Likely answer edit

Class E airspace — three common variants. The “catch-all” controlled airspace.

  1. Surface designated (E surface) — SFC up, around certain airports. Dashed magenta boundary on the sectional. Requires ATC authorization for sUAS.
  2. 700+ ft AGL — shaded magenta area. Floors at 700 ft AGL. Drones under 400 ft AGL do not need authorization here.
  3. 1 200 ft AGL not designated (the “default” E) — shaded blue. Floors at 1 200 ft AGL; again, no sUAS authorization needed below 400 AGL.