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 Basic VFR Weather Minimums $^{†}$ 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. Figure 8-6. Basic weather minimums for WSC operations in the different classes of airspace. airspace.  [Figures 8-3  and  8-7]  Also Class E is federal  airways beginning at 1,200 feet AGL extending 4 nautical  miles (NM) on each side, extending up to 18,000 feet.  Unless designated at a lower altitude, Class E airspace  begins at 1,200 AGL over the United States, including that  airspace overlying the waters within 12 NM of the coast of  the 48 contiguous states and Alaska, and extends up to but  not including 18,000 feet. There are no specific communications requirements  associated with Class E airspace  [Figure 8-5];  however, some  Class E airspace locations are designed to provide approaches  for instrument approaches, and a pilot would be prudent to  ensure that appropriate communications are established when  operating near those areas. 8-5