Airspace
Airspace is a core knowledge area on the General Aeronautical Knowledge FAA written exam. This hub collects our 2 in-depth, ACS-aligned airspace articles — each written in plain English and grounded in the official FAA handbooks. Work through them below, then drill the topic with practice questions.
Airspace Classes (A–G)
U.S. airspace is divided into controlled classes A, B, C, D, and E and uncontrolled Class G. Each class sets the rules for entry, equipment, and communication with air traffic control.
VFR Weather Minimums
Visual flight rules require minimum flight visibility and specific distances from clouds. The exact figures depend on the class of airspace and whether you are flying by day or night.
More General Aeronautical Knowledge subjects
Articles are original summaries grounded in the public-domain FAA handbooks and cite their source. ACS-aligned study aids — not a substitute for the official handbooks or regulations.