described below. The United States also defines categories of airspace that may overlap with classes of airspace. Classes of airspace are mutually exclusive...

The world's navigable airspace is divided into three-dimensional segments, each of which is assigned to a specific class. Most nations adhere to the classification...

the airspace classification. Controlled airspace consists of: Class A Class B Class C Class D Class E Class A airspace is generally the airspace from...

Class C is a class of airspace in the United States which follows International Civil Aviation Organization (ICAO) air space designation. Class C airspace...

Class B is a class of airspace in the United States which follows International Civil Aviation Organization (ICAO) airspace designation. Class B airspace...

except when taking off or landing. VFR flight prohibited in Class A airspace. United States Visual Flight Rules are provided in Title 14 of the Code of...

world, after the United States. There are seven classes of airspace in Canada, each designated by a letter (A through G). Class A airspace exists exclusively...

Class D is a class of airspace in the United States which follows International Civil Aviation Organization (ICAO) air space designation. Class D airspace...

The United States Congress is the legislature of the federal government of the United States. It is bicameral, composed of a lower body, the House of Representatives...

Ultralight aircraft exist outside of the United States. In most countries, ultralights are a class of aircraft. A completely different legal concept is...