Remove AGL Remove Clearance Remove Indicated Airspeed
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Pilot’s Guide to Airspace

Flight Training Central

For example, a pilot flying IFR in controlled airspace will have to file an IFR flight plan and receive an ATC clearance. For VFR flight, controlled airspace means increased cloud clearance and visibility requirements. For the VFR pilot flying in B, C, and D airspace, there are communication and/or clearance requirements.

AGL 52
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Class C Airspace Explained

Pilot Institute

Before entering Class C airspace, pilots must receive clearance from Air Traffic Control (ATC). 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. Transponder with Mode C to report altitude.

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Danger lurks in circling approaches

Air Facts

If you depart MDA on the downwind or base leg, you’re on your own as far as obstacle clearance. What specific indicated airspeed will be flown/adhered to during the circling maneuver? At what AGL altitude will the aircraft be in a stable/configured condition? Outside of assessed radii, the MDA is no longer valid.