Airspace Classes Flight Plan Knot 
Pilot Institute
JUNE 27, 2025
What Is Controlled Airspace? The FAA defines controlled airspace as “a generic term that covers the different classifications of airspace (Class A, Class B, Class C, Class D, and Class E airspace) and defined dimensions within which air traffic control service is provided to IFR and VFR flights.”
Pilot Institute
SEPTEMBER 26, 2024
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. Maintaining awareness of airspace boundaries helps with the planning and carrying out of successful flights. Happy flying!
Plane and Pilot
AUGUST 14, 2024
Speed limit : The maximum ground speed for drones is 100 mph (87 knots). Prohibited areas : Generally, drones cannot be flown over people, moving vehicles, or in restricted airspace (e.g., Airspace authorization : For operations in controlled airspace (Class A, B, C, D, and E), pilots must obtain prior authorization from the FAA.
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