FAA Airspace and Airport Classifications: Colors, Boundaries, and Regulations

What color is the Class B airspace?

Solid blue line with concentric rings labeled with fractions indicating ceilings and floors in hundreds of feet MSL.

What color is the Class C airspace?

Magenta solid line, typically a two-tier core and shelf system with MSL altitude fractions, surrounded by a 30 NM Mode C veil.

What color is the Class D airspace?

Blue dashed line, a cylinder surrounding a towered airport, marked by a bracketed blue number indicating the ceiling.

What color is the Class E airspace?

Magenta/Blue: Dashed Magenta for surface-based Class E, faded magenta vignette for 700 feet AGL, faded blue vignette for 1,200 feet AGL, and blue zipper line for custom floor altitude.

What color are the Prohibited and Restricted Areas?

Depicted with blue hatched 'comb' boundaries. Flight is banned in Prohibited areas and requires permission in Restricted areas.

What color are Military Operations Areas (MOAs)?

Depicted with magenta hatched 'comb' boundaries, indicating non-regulatory areas for high-speed military training.

What color are Alert/Warning Areas?

Alert areas use magenta hatched lines, while Warning areas use blue hatched lines located over international waters.

What color are National Security Areas?

Depicted with thick, defined dashed magenta lines indicating areas where pilots are requested to avoid flight.

What are blue airports?

Towered airports depicted in blue that require two-way radio communication prior to entering their surface airspace.

What are magenta airports?

Non-towered airports shown in magenta that do not have a control tower, with pilots coordinating via a Common Traffic Advisory Frequency.