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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 B Airspace—A Pilot’s Guide

Flight Training Central

An ATC clearance is required for operations within Class B airspace. A transponder with altitude reporting and an approved ADS-B out transmitter are also required for all operations. Class B Speed Limitations Aircraft flying within the Class B airspace may fly at an indicated airspeed of up to 250 knots.

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Class C Airspace Explained

Pilot Institute

Aircraft need to have a two-way radio, transponder with Mode C, and Automatic Dependent Surveillance-Broadcast (ADS-B) Out equipment. Before entering Class C airspace, pilots must receive clearance from Air Traffic Control (ATC). Maintain a maximum airspeed of 200 knots when within 4 NM of the airport and below 2500 feet.