The information on this Web site is intended solely as a study guide, and is not a subsitute for the aircraft manufacturer's Pilot's Operating Handbook, the Aeronautical Information Manual, and/or CFRs.

Airspace Classification and VFR Weather Minima

Airspace Classification in a Nutshell

Generally, almost all airspace is Class E. Around controlled airports it is Class B/C/D. Below 1,200 ft AGL it is Class G. Controlled airports may have Class E surface extensions, uncontrolled airports may lower the Class E bottom, and over mountainous terrain the top of Class G may be raised.

VFR Weather Minima in a Nutshell

Practically all airspace has 3 sm 500/1000/2000 (3 statute miles minimum visibility, 500 ft clearance below clouds, 1000 ft above, 2000 ft lateral). Above 18,000 ft MSL VFR flight is not permitted. Above 10,000 ft MSL has the strictest requirement of all: 5 sm 1000/1000/1sm. In class B, clearance requirement drops to simply remain clear. In daytime, Class G requires only 1 sm visibility and below 1,200 ft AGL also requires only clear of clouds.

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