Class C airspace.

• Floor: surface at the core.
• Ceiling: typically 4 000 ft AGL.
• Shape: two-ring “layer cake”:
  • Inner ring: 5 NM radius, SFC – 4 000 AGL.
  • Outer ring (“shelf”): 10 NM radius, from ~1 200 AGL up to 4 000 AGL.
  • Often extends a further 20 NM radio outer area (not shown).
• Sectional marking: solid magenta lines.
• Drone rule: ATC authorization required.