AGL Airspace Classes Indicated Airspeed 
Flight Training Central
MARCH 18, 2024
Class B Located around airports where there’s a large volume of air traffic, Class B airspace, often compared to an upside down wedding cake in shape, begins at the surface and extends upward to a designated altitude typically 10,000′ MSL. indicated airspeed, the speed limit for operations below 10,000′ MSL.
Pilot Institute
SEPTEMBER 26, 2024
ATC offers IFR and VFR aircraft separation services in Class C. Class C airports’ speed limits require aircraft within 4 Nautical Miles (NM) of the primary airport and below 2500 feet to maintain an Indicated Airspeed (IAS) of 200 knots or less. Happy flying!
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