Plain English Meaning

Parts of the sky over the United States where air traffic controllers are providing service to aircraft. Different sections have different rules about who can fly there, what equipment is needed, and what weather is required.

Full Definition

Airspace within the United States in which air traffic control (ATC) service is provided to aircraft in accordance with the airspace classification. Controlled U.S. airspace is a generic term that covers Class A, Class B, Class C, Class D, and Class E airspace. The level of ATC service, pilot qualifications, equipment requirements, and weather minimums vary by class.

Context Anchor

Seen in airspace rules, instrument discussions, and NextGen equipment requirements that apply only in certain parts of U.S. airspace.