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Class A
Class E
drops to ground
around some
airports
Class E
drops to 700 feet
AGL over many airports
Class G
above
1,200 feet
AGL in
some
areas
Class G uncontrolled airspace
AGL—above ground level FL—flight level MSL—mean sea level
1,200'AGL everywherenot marked on sectional
Figure 8-2. Class G uncontrolled airspace and Class E controlled airspace.
60,000 MSL (FL 600)
18,000 MSL (FL 180)
10,000 MSL Sport Pilot Limit
Class A
Class E
Class B
Class C
4,000' AGL
Class D
2,500' AGL
Class G Class G Class G Class G
700' AGL
1,200'
AGL
Class E
AGL—above ground level FL—flight level MSL—mean sea level
700'
AGL
1,200' AGL 1,200' AGL
Figure 8-3. Class G airspace extends from the surface to the base of controlled airspace (Class B, C, D, and E).
8-4
Figure 8-5. Requirements for airspace operation.
CLASS G from surface to 700 feet AGL.
CLASS G from surface to 700 feet AGL.
CLASS G from surface
to 700 feet AGL.
CLASS G from surface
to 12,000 feet AGL.
CLASS G from surface
to 1,200 feet AGL.
CLASS G from surface
to 12,300 MSL.
Figure 8-4. Class G airspace as shown on a sectional chart.
requirements to fl y in uncontrolled Class G airspace unless
there is a control tower. [Figure 8-5]
If operations are conducted at an altitude of < 1,200 feet AGL,
the pilot must remain clear of clouds. If the operations are
conducted more than 1,200 feet AGL but less than 10,000
feet mean sea level (MSL), cloud clearances are 1,000 feet
above, 500 feet below, and 2,000 feet horizontally from any
cloud(s). A popular mnemonic tool used to remember basic
cloud clearances is “C152,” a popular fi xed-wing training
aircraft. In this case, the mnemonic recalls, “Clouds 1,000,
500, and 2,000.”
Visibility in Class G airspace below 10,000 MSL day fl ight
is one statute mile (SM) for private pilots and three SM for
sport pilots. See Figure 8-6 for specifi c Class G weather
minimums for WSC pilots.
Controlled Airspace
Controlled airspace is a generic term that covers the different
classifi cations of airspace and defi ned dimensions within
which ATC service is provided in accordance with the
airspace classifi cation. Controlled airspace consists of:
• Class E
• Class D
• Class C
• Class B
• Class A
Class E Airspace
Generally, if the airspace is not Class A, B, C, or D, and
is controlled airspace, then it is Class E airspace. Class
E airspace extends upward from either the surface or a
designated altitude to the overlying or adjacent controlled
8-5
Airspace* Flight visibility† Distance from clouds
Class A Not applicable Not applicable
Class B 3 statute miles Clear of clouds
Class C 3 statute miles 500 feet below
1,000 feet above
2,000 feet horizontal
Class D 3 statute miles 500 feet below
1,000 feet above
2,000 feet horizontal
Class E Less than 10,000 feet MSL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 statute miles 500 feet below
1,000 feet above
2,000 feet horizontal
At or above 10,000 feet MSL* . . . . . . . . . . . . . . . . . . . . . . . . . . 5 statute miles 1,000 feet below
1,000 feet above
1 statute mile horizontal
Class G 1,200 feet or less above the surface (regardless of MSL altitude)
Day, except as provided in 14 CFR section 91.155(b). . . . . . . . 1 statute mile† clear of clouds
Night, except as provided in 14 CFR section 91.155(b). . . . . . . 3 statute miles 500 feet below
1,000 feet above
2,000 feet horizontal
More than 1,200 feet above the surface but less than 10,000 feet MSL
Day. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 statute mile† 500 feet below
1,000 feet above
2,000 feet horizontal
Night‡ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 statute miles 500 feet below
1,000 feet above
2,000 feet horizontal
More than 1,200 feet above the surface and at or above 10,000 feet MSL*
5 statute miles 1,000 feet below
1,000 feet above
1 statute mile horizontal
† Sport pilots must maintain 3 SM or better visibility in all airspace.
‡ Sport pilots are not authorized to fly at night.
* Sport pilots are not authorized to fly above 10,000 feet MSL.
Basic VFR Weather Minimums
Figure 8-6. Basic weather minimums for WSC operations in the different classes of airspace.
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Weight-Shift Control Aircraft Flying Handbook(95)
